go figure. i wouldnt go as far as suing them, but this a big fumble on their part. I havent tried gaming on vista yet except for Halo, and when im online it tells me that my product key is invalid, i know thats not true i bought the game myself at walmart 2 years ago. Vista has many bugs especially when it comes to software compatibility, and to me it seems its new anti-piracy features cripple older games like Halo.