Apparently visual studio 2010 built DLLs do not support Windows 2000. Is there a way to build with Windows 2000 support?
If not, I want to down convert my solution to compile in Visual Studio 2008. I have the solution downgraded, but the project files seem to be tricky. I believe they have changed the format quite a bit between versions. How would I go about downgrading the project files?
The compatibility problem and the workaround is described in this KB article.
There is no down-conversion option to go from a .vcxproj to a .vcproj. Perhaps the changed filename extension is the strongest hint, but the project file format was changed dramatically in VS2010. The build plumbing was completely changed to support building with msbuild.exe. You'll have to recreate the project from scratch in VS2008.