I'm not able to play!

[overweightninja]

I have installed and uninstalled the Barbarorum file in two Rome locations. Activision folder, and the creative assembly folder. Both failed to locate the file Rome:TW.exe.

Use my computer/search function/right click the shortcut/whatever you prefer and find out where your install actually is rather than guessing. When you have found it, the installer needs to point so that the last folder is where the file RomeTW.exe is located. This is usually Rome - Total War rather than the activision or CA folders with a default install, but again actually check rather than guess (mine is C:\Games\RTW\ for example, nothing like the usual defaults).
Cheers

EDIT
Oops sorry MAA missed your post there...