uh, sound to me like you have made a bad backup earlier, used a no cd 'til now and now want to make a good copy?
if not so: i think this won't be possible any more, since you dont have an image file directly from the original cd... but - you own it, yes?
if the original is ruined (scratched???), you can send it to the publisher of the game, pay 15 bucks or what and he will send you a new one.
but maybe you can try this, but i think it wont work: burn the file and the folder to a cd, make an image from the just burned cd, download a good bwa for the cd, use bw to burn the cd with the bwa file... but i think, it wont work....