I play it on my MacBook Air with a 9400M and it runs fine.
I also play it on the iMac whenever it's not being used and that thing runs it at 1920x1200 with high settings with only a ATi X2600XT video card.
IMAC 2008 Model ATI 2600 PRO HD 4 GB Ram using Bootcamp Vista, no issues so far. Side issue though need to use OS 10.5 Audio/MIC drivers, just go into your DVD Bootcamp/driver directory and run the realtek.exe and set your MIC Boost to +10 down from +20. This is so you can use Ventrillo or any other voice client.