1. Close all instances of visual Studio
2. Copy the following lines to a file name : clear_recent_projects.reg
Windows Registry Editor Version 5.00
[-HKEY_CURRENT_USER\Software\Microsoft\VisualStudio\9.0\ProjectMRUList]
[HKEY_CURRENT_USER\Software\Microsoft\VisualStudio\9.0\ProjectMRUList]
3. Locate the File and Double click on it.