Thanks for the reply, I tried the RTW registry cleaner from Fileplanet with no success, here's the report:

Spoiler Alert, click show to read: 
Deleting Key... HKEY_LOCAL_MACHINE\SOFTWARE\The Creative Assembly
Not found!
Deleting Key... HKEY_CURRENT_USER\SOFTWARE\The Creative Assembly
Not found!
Deleting File... C:\WINDOWS\RomeTW.ini
Not found!
Removing all temporary files....
C:\DOCUME~1\Dan\LOCALS~1\Temp\
Success!
Uninstall/Cleaning Completed!


I have downloaded and installed the trial version of Registry Mechanic at the top of the Google Search page, but I do not know how to properly use it.