A number of sites are reporting that the Xbox 360 games could be playable on the next Windows operating system, Windows 8. While not yet confirmed, it could have many implications if true. Apparently the only thing PC users will have to do is have Windows 8 and pop the Xbox 360 game into their DVD drive and that is it.
However, your PC will still need to be powerful enough to run the games. In addition, if you want to play these games online, PC players will have to buy access into an Xbox Live feature like Xbox 360 users have to.