Towlie
If the disk is not chipped or cracked or in pieces...
Only scratched...
then why don't you take it down to a used music CD store and have it professionally turned...
here in San Antonio, TX, we have a place called CD Exchange and they professionally refinish scratched CD back into new condition for only $2.00 a CD... this includes games, DVD, music CD, Data CD.. any CD.... Doing this, i never have to buy another CD to replace one unless I crack or break it.
Also, why not copy the CD after fixing it to the hard Drive and burn you another backup original copy? I have done this for all my games (some games I have to use DVD X Copy Express to get the CD CRC files) but it works none the less so i can always reinstall the game later, or have a disk that the computer will recognize for future play time...
Just a suggestion before you go spending more money than you have too..
just call around...
For a not so good but quick fix... buy a Game Doctor from Best Buy... it is n't the greatest, but hopefully it can finish the CD enough for it to work...
Hope that this helps...