There are a couple versions of cleanup tools available that might help here.

For VS 2005 beta products, you can try the cleanup tool at http://astebner.sts.winisp.net/Tools/vs2005_beta_cleanup_tool.zip

For the .NET Framework 1.0 and 1.1, you can try the cleanup tool at http://astebner.sts.winisp.net/Tools/dotnetfx_cleanup_tool.zip.  For this tool please read the blog post at http://blogs.msdn.com/astebner/archive/2005/04/08/406671.aspx and take note of the instructions and caveats.

Hope this helps....