damn. my post in the other thread didn't work...
well,
http://www.sabayonlinux.org/ will tell you how to get sabayon.
its LiveOnCD/LiveOnDVD which means you just burn the iso using your favourite burning program, bung it in your drive, reboot making sure your pc (or mac) loads from the disc and heypresto, it loads as an os.
Knoppix is a great simple version, without all the fancy todo of beryl.
http://www.knopper.net/knoppix/index-en.html
its just a simple version of linux, same live disc concept.
the great thing about live, is you can still use your pc normally with windows and not have to worry about re-partitioning and setting up dualboot bootloaders. (which are a pain for a novice)
i do reccommend joining forums for help on linux.
of course you cant really save your settings but at first what you want to do is learn how it all works. and im sorry to say, theres ALOT of terminal command line code in linux.
when you get one downloaded, start basic by learning how to install flash and how to load up terminals in windows, how to navigate between folders and around the file system in terminals, what the file system structure is and what you can do in them. practice that and you should be on your way.
then when you've got enough knowledge through that, it might be time to think about setting up a dual boot with a simple beginners version of linux for you to install and start setting up your accounts and how the root user works etc.
i'm certainly not a big linux head but i'm coming along.