LNK 2005 error when building regular DLL

I'm making regular Dll that statically link to MFC.(Visual C++ 5.0)
When building the sources, the following errors occured.
Once these error message occured, it was never be changed.
To correct these errors, What CAN I DO ???

Help me. Thanks in advance.


nafxcwd.lib(dllmodul.obj) : error LNK2005: _DllMain@12 already defined in LIBCMTD.lib(dllmain.obj)
nafxcwd.lib(dllmodul.obj) : warning LNK4006: _DllMain@12 already defined in LIBCMTD.lib(dllmain.obj); second definition ignored