The keys where the actual entries are stored are all over the place, and change with differenct version of office. You can find them yourself by creating a "sentinel" file in each application and then searching the registry. Here are just a few from my system:


Excel: HKEY_CURRENT_USER\Software\Microsoft\Office\10.0\Excel\Recent Files
Excel: HKEY_CURRENT_USER\Software\Microsoft\Office\10.0\Common\Open Find\Microsoft Excel\Settings\Open\File Name MRU

Access: HKEY_CURRENT_USER\Software\Microsoft\Office\10.0\Access\Settings

But I found refernces sprinkled liberally throughout the registry.