I'm curious, too, as to how compatible the game is with Windows7. I just recently got a new PC, and it's running the 64-bit version of W7. Has anyone heard of compatibility issues with Halo2? Thinking of picking it up, now that I finally have a computer that can run it properly. I'm assuming, when they said "for Vista only," that this was meant at the time of release to point out that it won't work with older operating systems (XP and backwards). But as for newer ones, you'd hope it works just fine. Especially for one of Microsoft's biggest titles, one which still sees quite a bit of online play.
Completed Retail: 26 | Completed Arcade: 79 | Total Completed Games: 105
Achievement Completion: 79% | TA Ratio: 1.65 (All data is accurate as of September 18th, 2012)