:\ iirc, .CCD .IMG and .SUB all go together to enable image burning in the program CloneCD. Not being familiar with CloneCD, i can’t really help you. You can try to see if Nero or Alcohol will read the CUE sheet anyway, though.
Because my HD is only 7.8GB big, and if you consider all the stuff I keep permanently, I have about 3/3.5GB left to play around. 700MB average is a bit too much to keep forever and I’m tired of downloading things when I feel like playing it again after a while (eMule takes about a week or two).
Also, I’vee been wanting to play Baldur’s Gate II again for a while, and the 700MB average per disk (five disks), plus the huge setup content goes way over my limit.