Hi

As my title says I have this error, but I'm wondering because these header files are built in header files not customize.

here are the errors
Code:
--------------------Configuration: NewServer - Win32 Debug--------------------
Compiling...
StdAfx.cpp
c:\program files\microsoft visual studio\vc98\include\basetyps.h(149) : warning C4005: 'interface' : macro redefinition
        c:\program files\microsoft visual studio 8\vc\platformsdk\include\objbase.h(193) : see previous definition of 'interface'
c:\program files\microsoft visual studio\vc98\include\basetyps.h(155) : warning C4005: 'DECLARE_INTERFACE' : macro redefinition
        c:\program files\microsoft visual studio 8\vc\platformsdk\include\objbase.h(201) : see previous definition of 'DECLARE_INTERFACE'
c:\program files\microsoft visual studio\vc98\include\basetyps.h(156) : warning C4005: 'DECLARE_INTERFACE_' : macro redefinition
        c:\program files\microsoft visual studio 8\vc\platformsdk\include\objbase.h(202) : see previous definition of 'DECLARE_INTERFACE_'
Compiling...
ChattingDlg.cpp
c:\program files\microsoft visual studio\vc98\include\comdef.h(695) : error C2065: 'IAsyncSetup' : undeclared identifier
c:\program files\microsoft visual studio\vc98\include\comdef.h(710) : error C2065: 'IClassAccess' : undeclared identifier
c:\program files\microsoft visual studio\vc98\include\comdef.h(712) : error C2065: 'IClassAdmin' : undeclared identifier
c:\program files\microsoft visual studio\vc98\include\comdef.h(715) : error C2065: 'IClassRefresh' : undeclared identifier
c:\program files\microsoft visual studio\vc98\include\comdef.h(750) : error C2065: 'IEnumClass' : undeclared identifier
c:\program files\microsoft visual studio\vc98\include\comdef.h(762) : error C2065: 'IEnumPackage' : undeclared identifier
c:\program files\microsoft visual studio\vc98\include\comdef.h(1078) : error C2065: 'IXMLElementNotificationSink' : undeclared identifier
ClientSocket.cpp
c:\program files\microsoft visual studio\vc98\include\comdef.h(695) : error C2065: 'IAsyncSetup' : undeclared identifier
c:\program files\microsoft visual studio\vc98\include\comdef.h(710) : error C2065: 'IClassAccess' : undeclared identifier
c:\program files\microsoft visual studio\vc98\include\comdef.h(712) : error C2065: 'IClassAdmin' : undeclared identifier
c:\program files\microsoft visual studio\vc98\include\comdef.h(715) : error C2065: 'IClassRefresh' : undeclared identifier
c:\program files\microsoft visual studio\vc98\include\comdef.h(750) : error C2065: 'IEnumClass' : undeclared identifier
c:\program files\microsoft visual studio\vc98\include\comdef.h(762) : error C2065: 'IEnumPackage' : undeclared identifier
c:\program files\microsoft visual studio\vc98\include\comdef.h(1078) : error C2065: 'IXMLElementNotificationSink' : undeclared identifier
c:\program files\microsoft visual studio\vc98\include\iostream.h(58) : fatal error C1083: Cannot open include file: 'ostream.h': No such file or directory
ClientUser.cpp
c:\program files\microsoft visual studio\vc98\include\iostream.h(58) : fatal error C1083: Cannot open include file: 'ostream.h': No such file or directory
ConnectThread.cpp
c:\program files\microsoft visual studio\vc98\include\comdef.h(695) : error C2065: 'IAsyncSetup' : undeclared identifier
c:\program files\microsoft visual studio\vc98\include\comdef.h(710) : error C2065: 'IClassAccess' : undeclared identifier
c:\program files\microsoft visual studio\vc98\include\comdef.h(712) : error C2065: 'IClassAdmin' : undeclared identifier
c:\program files\microsoft visual studio\vc98\include\comdef.h(715) : error C2065: 'IClassRefresh' : undeclared identifier
c:\program files\microsoft visual studio\vc98\include\comdef.h(750) : error C2065: 'IEnumClass' : undeclared identifier
c:\program files\microsoft visual studio\vc98\include\comdef.h(762) : error C2065: 'IEnumPackage' : undeclared identifier
c:\program files\microsoft visual studio\vc98\include\comdef.h(1078) : error C2065: 'IXMLElementNotificationSink' : undeclared identifier
Lib.cpp
c:\program files\microsoft visual studio\vc98\include\iostream.h(58) : fatal error C1083: Cannot open include file: 'ostream.h': No such file or directory
ListeningSocket.cpp
c:\program files\microsoft visual studio\vc98\include\comdef.h(695) : error C2065: 'IAsyncSetup' : undeclared identifier
c:\program files\microsoft visual studio\vc98\include\comdef.h(710) : error C2065: 'IClassAccess' : undeclared identifier
c:\program files\microsoft visual studio\vc98\include\comdef.h(712) : error C2065: 'IClassAdmin' : undeclared identifier
c:\program files\microsoft visual studio\vc98\include\comdef.h(715) : error C2065: 'IClassRefresh' : undeclared identifier
c:\program files\microsoft visual studio\vc98\include\comdef.h(750) : error C2065: 'IEnumClass' : undeclared identifier
c:\program files\microsoft visual studio\vc98\include\comdef.h(762) : error C2065: 'IEnumPackage' : undeclared identifier
c:\program files\microsoft visual studio\vc98\include\comdef.h(1078) : error C2065: 'IXMLElementNotificationSink' : undeclared identifier
LoginDlg.cpp
Machine.cpp
MainFrm.cpp
NetData.cpp
c:\program files\microsoft visual studio\vc98\include\comdef.h(695) : error C2065: 'IAsyncSetup' : undeclared identifier
c:\program files\microsoft visual studio\vc98\include\comdef.h(710) : error C2065: 'IClassAccess' : undeclared identifier
c:\program files\microsoft visual studio\vc98\include\comdef.h(712) : error C2065: 'IClassAdmin' : undeclared identifier
c:\program files\microsoft visual studio\vc98\include\comdef.h(715) : error C2065: 'IClassRefresh' : undeclared identifier
c:\program files\microsoft visual studio\vc98\include\comdef.h(750) : error C2065: 'IEnumClass' : undeclared identifier
c:\program files\microsoft visual studio\vc98\include\comdef.h(762) : error C2065: 'IEnumPackage' : undeclared identifier
c:\program files\microsoft visual studio\vc98\include\comdef.h(1078) : error C2065: 'IXMLElementNotificationSink' : undeclared identifier
NetDataCtl.cpp
NewServer.cpp
c:\program files\microsoft visual studio\vc98\include\comdef.h(695) : error C2065: 'IAsyncSetup' : undeclared identifier
c:\program files\microsoft visual studio\vc98\include\comdef.h(710) : error C2065: 'IClassAccess' : undeclared identifier
c:\program files\microsoft visual studio\vc98\include\comdef.h(712) : error C2065: 'IClassAdmin' : undeclared identifier
c:\program files\microsoft visual studio\vc98\include\comdef.h(715) : error C2065: 'IClassRefresh' : undeclared identifier
c:\program files\microsoft visual studio\vc98\include\comdef.h(750) : error C2065: 'IEnumClass' : undeclared identifier
c:\program files\microsoft visual studio\vc98\include\comdef.h(762) : error C2065: 'IEnumPackage' : undeclared identifier
c:\program files\microsoft visual studio\vc98\include\comdef.h(1078) : error C2065: 'IXMLElementNotificationSink' : undeclared identifier
NewServerDoc.cpp
NewServerView.cpp
c:\program files\microsoft visual studio\vc98\include\comdef.h(695) : error C2065: 'IAsyncSetup' : undeclared identifier
c:\program files\microsoft visual studio\vc98\include\comdef.h(710) : error C2065: 'IClassAccess' : undeclared identifier
c:\program files\microsoft visual studio\vc98\include\comdef.h(712) : error C2065: 'IClassAdmin' : undeclared identifier
c:\program files\microsoft visual studio\vc98\include\comdef.h(715) : error C2065: 'IClassRefresh' : undeclared identifier
c:\program files\microsoft visual studio\vc98\include\comdef.h(750) : error C2065: 'IEnumClass' : undeclared identifier
c:\program files\microsoft visual studio\vc98\include\comdef.h(762) : error C2065: 'IEnumPackage' : undeclared identifier
c:\program files\microsoft visual studio\vc98\include\comdef.h(1078) : error C2065: 'IXMLElementNotificationSink' : undeclared identifier
c:\program files\microsoft visual studio\vc98\include\iostream.h(58) : fatal error C1083: Cannot open include file: 'ostream.h': No such file or directory
OptionDlg.cpp
ReportCtrl.cpp
RoomDlg.cpp
c:\program files\microsoft visual studio\vc98\include\comdef.h(695) : error C2065: 'IAsyncSetup' : undeclared identifier
c:\program files\microsoft visual studio\vc98\include\comdef.h(710) : error C2065: 'IClassAccess' : undeclared identifier
c:\program files\microsoft visual studio\vc98\include\comdef.h(712) : error C2065: 'IClassAdmin' : undeclared identifier
c:\program files\microsoft visual studio\vc98\include\comdef.h(715) : error C2065: 'IClassRefresh' : undeclared identifier
c:\program files\microsoft visual studio\vc98\include\comdef.h(750) : error C2065: 'IEnumClass' : undeclared identifier
c:\program files\microsoft visual studio\vc98\include\comdef.h(762) : error C2065: 'IEnumPackage' : undeclared identifier
c:\program files\microsoft visual studio\vc98\include\comdef.h(1078) : error C2065: 'IXMLElementNotificationSink' : undeclared identifier
SqlDB.cpp
c:\program files\microsoft visual studio\vc98\include\comdef.h(695) : error C2065: 'IAsyncSetup' : undeclared identifier
c:\program files\microsoft visual studio\vc98\include\comdef.h(710) : error C2065: 'IClassAccess' : undeclared identifier
c:\program files\microsoft visual studio\vc98\include\comdef.h(712) : error C2065: 'IClassAdmin' : undeclared identifier
c:\program files\microsoft visual studio\vc98\include\comdef.h(715) : error C2065: 'IClassRefresh' : undeclared identifier
c:\program files\microsoft visual studio\vc98\include\comdef.h(750) : error C2065: 'IEnumClass' : undeclared identifier
c:\program files\microsoft visual studio\vc98\include\comdef.h(762) : error C2065: 'IEnumPackage' : undeclared identifier
c:\program files\microsoft visual studio\vc98\include\comdef.h(1078) : error C2065: 'IXMLElementNotificationSink' : undeclared identifier
c:\program files\microsoft visual studio\vc98\include\iostream.h(58) : fatal error C1083: Cannot open include file: 'ostream.h': No such file or directory
SrvEventSink.cpp
UserInfo.cpp
c:\program files\microsoft visual studio\vc98\include\comdef.h(695) : error C2065: 'IAsyncSetup' : undeclared identifier
c:\program files\microsoft visual studio\vc98\include\comdef.h(710) : error C2065: 'IClassAccess' : undeclared identifier
c:\program files\microsoft visual studio\vc98\include\comdef.h(712) : error C2065: 'IClassAdmin' : undeclared identifier
c:\program files\microsoft visual studio\vc98\include\comdef.h(715) : error C2065: 'IClassRefresh' : undeclared identifier
c:\program files\microsoft visual studio\vc98\include\comdef.h(750) : error C2065: 'IEnumClass' : undeclared identifier
c:\program files\microsoft visual studio\vc98\include\comdef.h(762) : error C2065: 'IEnumPackage' : undeclared identifier
c:\program files\microsoft visual studio\vc98\include\comdef.h(1078) : error C2065: 'IXMLElementNotificationSink' : undeclared identifier
Generating Code...
If I run the original code in release code the program works fine, but if i try to rebuild the project then those errors will popup and I don't know why as they are built in header files.

I'm just new to visual c or even to c although I have basic c knowledge, but I know it's not enough. I'm a vb programmer so debugging a program that I don't really understand is very frustrating, I know it's suicide, but I don't have a choice. Right now I need to make it run that's all I need to workout at the moment, so if some one can point me to the right direction I would highly appreciate it.

Many thanks
Dennis