In the registry...
Microsoft Office Publisher 2007
Warning Serious problems might occur if you modify the registry incorrectly by
using Registry Editor or by using another method. These problems might require
that you reinstall your operating system. Microsoft cannot guarantee that these
problems can be solved. Modify the registry at your own risk.
To clear the list of recently used files in Publisher 2007, delete the registry
subkey that contains the list. This registry subkey is re-created the next time
that you start Publisher 2007. To delete this registry entry, follow these
steps:
Exit Publisher 2007.
Click Start, click Run, type regedit, and then click OK.
Delete the following registry subkey:
HKEY_CURRENT_USER\Software\Microsoft\Office\12.0\Publisher\Recent File List
Exit Registry Editor.
