I believe this is to do with Securom the much loved drm. Apparently the 4.07 disc version of it is not compatable with win 7 x64, you need to go here:
https://support.securom.com/analysis.php
and
"Download the SecuROM diag tool and run a scan. Just get it to update the nessesary files and it should then run."
If you have installed the game in program files that will complicate things for you if you decide to tinker with it, and who doesn't? Suggest you move it out of there to something like C: Games, then update securom.
Good luck.