Visual Studio Installation error

Hi,
I am getting the following error when I try to Open an Visual C# Project. I
started getting this error after installing MSDN.NET April 2002 (DVD).

"Project <Name> could not be opened because the microsoft Visual C# .NET
compiler could not be created. Please re-install Visual Studio."

I re-installed  the VS.NET Enterprise edition but still having the problem.
I removed the MSDN.NET and re-installed the VS.NET still I am having the
problem.

I have
Visual Studio 6.0 , MSDN july 2001 in C- drive
Visual Studio 7.0 Enterprise Edition in D -drive.

Any help is appreciated.

thanks,
Badre

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