Games contain copyright protection for a reason.
I understand the fact that you say you owned this game at one time, but copying a game is violating EULA and CP laws.
Contact the game developer and they should be able to send you out a new disc if you provide them with the broken one (may be a small 5 dollar charge).
I know this wasnt what you wanna hear, but the TF dont support warez, and unfortunately burning counts. Sorry.
System specs? Lets just get down to it people:
My penis is bigger than yours.