I am using Visual Studio 2008. And developed a project using VC++(MFC). My PC was of MS VISTA OS. today, I've changed the OS and installed XP. and reinstalled the VS 2008 also.

When I opened my developed program, and trying to select the dialog box (from resource). It had shown an error msg that " The resource in the file using an unknown language English(US) unknown sub language.So unable to open"

So the developed dialog is not opening. Why it is so? and how I can get my developed resource files back....