HI...my stepdad is putting my computer together for me since he's done it before. he said i need to get an operating system (Windows ME full version install...not the upgrades). He's not that familiar with oem vs retail for this, but thinks oem might be just as good. I know it's alot cheaper to get it oem, but wondering if you guys can give me the pros and cons on the two. Also, does anyone know where i can get the best price online?...thanks, vroom