I found a solution you'll love or not...
Scarface (xp dvd, non-pirated version,)
Works after this tweak in windows 7 x64 ultimate for me.
No compatibility mode...Use msconfig, boot tab, advanced options, check number of processors set this at 1.
reboot. Works for me!
Running at 1/4 processing power is a bummer. Actually using a SLI setup too... let me get back to you with frame rates 15 minutes.