Punk Buster a anti cheating software used on a long list of games, spits out the error OS invalid. what does this have to do with hackers. like some kid is going to invent there own os just to play BF2. the primary game i can not access for shure is BF2 i am going to give AA a try. does any one else have this problem. If you want me to jump back to xp just to use PB think not with a laptop with int graphics the improvemnet with vista is worth it.

I'm not 100% sure on this, but I believe punkbuster is giving you the OS error b/c you dont have the program set to run as an administrator. More or less if the program is not set up as admin it will try to limit the files that are accessed and PB will give you the OS error, or worse, it will report you as cheating with a "Game Hook #120035" hack. Setting the game to "run as" admin will solve the OS error, but the Gamehook error is a problem with Microsoft's new DX10. I remember reading somewhere that someone wrote in to evanbalance and they said they stopped, and will no longer support vista betas b/c microsoft is changing so much from one beta to the next. They said they will not support vista until it is in its final release.

Thanks it worked fine when in Admin mode i can't belive i never thought of that