If windows is pi$$ing you off, try the live disk of Ubuntu.http://www.ubuntu.com/products/WhatIsUb ... topedition
(I actually prefer the Xubuntu flavor. more plain jane desktop. Kubuntu has all the bells and whistles and is real nice too.)
This will let you try out Ubuntu Linux without installing anything to your HDD. It typically runs slower because the entire OS is loaded to RAM on the live disk.
You can download the disk image to burn a CD, or order a disk for free (slow shipping) if you're on dialup.