By default the Recent Projects list on the Start Page automatically displays the last six solutions you edited, from newest to oldest. Use this procedure to remove solutions that you do not want to appear in this list
To remove items from the Recent Projects list, follow these steps:
1. Close Visual Studio if it’s running.
2. Start --> Run…
3. Start the Registry Editor (run regedit)
5. Click on HKEY_CURRENT_USER from the Registry Editor
6. Select Software in HKEY_CURRENT_USER
7. Choose Microsoft Folder in Software
8. Select Visual Studio in Microsoft Folder
9. Choose 9.0 in Visual Studio Folder
10. Click on ProjectMRUList in 9.0 Folder
11. Select items and Delete it
Finally I remind u if needed reorder your list.File1, File2 etc. And delete all items or a selected item in the list depends on Ur opinion. For Example I delete File4, then only projects corresponding to File1 to File3 will be displayed in the recent project list.