Please Help! BF2 disc3 is bad, How to backup and replace bad files?

[Bcc335]

Ok, Heres the problem. I purchased BF2 installed and ran no problems. Had hard drive failure and tryed to re-install battlefield2 and found cd disc 3 is bad. I believe it is unrepairable. Its not a scratch the cd player door actually closed on the outer edge and you can actually see thru the dot/scratch from the other side. I payed for this game software have a valid key and I dont want to pay a second time. Disc 1 and 2 are fine.

How Can I back up disc 3 to an image file and then replace the bad files and burn to new cd?

I have a copy of disc 3 from another source to replace my bad files only.

I want to copy my bad disc and then replace the bad spots/files using my other source. The bad spots arent that big. After I replace I would then burn to cd creating a new cd3.