How to remove projects/ solutions from Recent Projects window in Visual Studio 2005

This blog post answers your question quite nicely. I won't duplicate the author's work here.

Steps to Remove Recent Projects

  1. Close Visual Studio if it is running.
  2. Start the Registry Editor (Start...Run... type regedit).
  3. Navigate to this registry key: HKEY_CURRENT_USER\Software\Microsoft\VisualStudio\8.0\ProjectMRUList
  4. Then delete the key that has the project you do not want to keep in the list.

Right click on the Solution icon in Solution Explorer window, change the name of the Solution to a different one. Then double click the project in Recent Projects window. Visual Studio will ask you if you need to delete the project. Click OK to get rid of it.