well there are several verisons of games that install on linux (very few) the only one that comes to my mind right now is unreal 2003
there is emulation support to linux for games.
www.transgaming.com
and
www.winehq.com
transgaming cost 5 bucks a month, and has a range of games support that you can search. they just came out with winex 3.3 yesterday that supports steam. You need to remember linux is not design for gaming. Its designed for desktop applications and server side. But people like to play around with it.
Winehq is free but has very limited support and does not support all games either
i would get winxp pro than home.
http://www.winsupersite.com/showcase...p_home_pro.asp