www.inserttorrentsitehere.com?
Be warned 1. Torrents of operating systems may be comprimised. 2. Drivers could be a pain in the butt to find.
I recomend, pay the money and wait. Less hassle and you may as well do it right first time. One option - go to the store and ask REALLY nicely to borrow a CD from the box and do it in store.
Tease.