For gaming there is XP
For everything else there is Linux
WHY LINUX IS BETTER
http://www.whylinuxisbetter.net/
I thoroughly recommend Linux Mint 7 Main Edition which is Ubuntu 9.04 based. Its easy to install and easy to use plus it comes with much of the software you are likely to need preinstalled
Linux Mint 7 Download
http://www.linuxmint.com/edition.php?id=38
The Perfect Desktop - Linux Mint 7 (Gloria)
http://www.howtoforge.com/the-perfect-desktop-linux-mint-7-gloria
You download the ISO. image of Linux Mint 7 then you need to create a Bootable LiveCD for installation
Linux Mint also has a feature called mint4win based on the Wubi installer (Ubuntu) http://wubi-installer.org/ which enables you to install Linux Mint within windows
You keep Windows as it is, mint4win only adds an extra option to boot into Linux Mint. mint4win does not require you to modify the partitions of your PC, or to use a different bootloader, and does not install special drivers. It works just like any other application.
mint4win keeps most of the files in one folder, and if you do not like it, you can simply uninstall it as any other application.
Linux Mint 7 can also be run direct from the LiveCD from Booting up without touching your Hard Drive
CURRENT DISTROS.
Linux Mint 6 ext3 with Compiz Fusion 0.7.0
http://www.linuxmint.com/edition.php?id=31
http://wiki.compiz-fusion.org/
Linux Mint 6 ext3 with Beryl 0.2.1
http://www.linuxmint.com/edition.php?id=31
http://www.beryl-project.org/features.php
Linux Mint 7 ext3 with Beryl 0.2.1
http://www.linuxmint.com/edition.php?id=38
http://www.beryl-project.org/features.php
CURRENT SESSION
Linux Mint 6 ext3 with Compiz Fusion 0.7.0
LUg.