Bah, gaming on Linus works. Transgaming's Cedega runs excellently! I can use it to play WarCraft 3, Anarchy Online (a MMORPG!), and pretty much anything else you could want to play. For YEARS, this has been the only reason I have kept windows around. I no longer need windows for ANYTHING. Lets see:
M$ Office - OpenOffice
WinAmp - XMMS
Windows Media Player - MPlayer
PhotoShop - GIMP
Internet Exploder - FireFox
And, of course, all the games as well. The FUD that M$ and their users are spreading about how hard Linux is to learn and use nowadays is ridiculous. Sure, it USED to be, but now I can d/l a distro, install it, and use it without ever needing to go to a command line, some kind of prompt, or leave the GUI for any reason (except to reboot).
If you truly want to switch to a free OS with no virii, no BSODs, and excellent configurability, use Linux.
The top "n00b" friendly distros are Xandros, Linspire (although not as much anymore), Mandrake, and Ubuntu. Right now, Ubuntu is skyrocketing its way up to the top - its a treat. I recommend you check it out, its excellent.
http://www.ubuntulinux.org
It installs a basic set of apps for you to use, and all you need is to apt-get your new programs. I use this distro because I like Gnome (looks somewhat like OS X - my fav OS), its based on a newbie Linux distro (Debian), and is extremely easy to install, configure, and keep up to date.
If you want to switch to Linux, IM me using one of the little icons next to my name...I'll be glad to talk at you about switching and even help you through the process of switching should you choose to do so.