General Office Notes
You can control the number of Recent Documents by going to the main Ribbon icon, and going to Word/Excel/PowerPoint/etc. Options>Advanced>Display and changing the 'Show this number of Recent Documents' value.
However if you decrease and then increase the number, the documents that previously were in the list will reappear. To permanently delete a Recent Document you have to:
- Run 'regedit'
- Go to (depending on the application, Word/Excel/etc.): 'HKEY_CURRENT_USER\Software\Microsoft\Office\12.0\[Word/Excel/etc.]\ File MRU' and then delete the corresponding 'Item [#]' file.
- Exit and restart the application.