Hi, I would suggest you download the Elyssa Main Edition (Revision 1) from one of the Official Mirrors on this page http://www.linuxmint.com/mirrors.php?id=25
. Once you download the iso image you then need to burn the image to disc. Post back if you need more instructions on how to do that. I'll be away for a few days but I'm sure someone will be able to point you in the right direction
Once you have the disc image burnt you should be able to reboot your computer into the live disc version of Mint and see if you enjoy it as much as we do.