tim, just go for it - once you've been minted, it's very hard to go back to windows and all it's nasty hacker issues.
the absolute hardest part of any linux os is burning the iso download to create the install disc. i've wasted about a dozen cd/dvd discs getting the dang thing to verify correctly (see my post above on mint verification). not all iso burning progs work well. always burn at the slowest speed possible.
if you can't seem to get the iso to burn to a verified install disc, best to just spend the $10 and get the disc delivered. once you have the install disc, you can easily make as many copies of it as you like. backing up an install disc is never a problem - burning an iso file to create an install disc is the problem.
also, the linux mint iso can be 'burned' to a flash drive (1gig is all that's needed) - this means no wasted discs if there are iso burning issues. you just set your pc's boot sequence to allow for booting from a flash drive.