Use to love this game on my (then) state-of-the-art PC back in early '06, played it to death.
Now I'm a Mac owner playing PC games via Bootcamp on WinXP x64 and was sceptical about installing this game (from my original CD) with the Starforce drivers controversy (big problems with 64bit apparently).
Then when I saw it advertised through GOG without DRM I immediately signed up, downloaded and installed. This game runs like a dream with all details turned up to the max.
Highly recommended!