just use alcohol 120% and the Playstation preset. that stops on any read errors. however, since you probably will get read errors, you can have it skip read errors...but then you might get a screwed up ISO.
so, i advise you to buff out your CD. there are tools to do this (i.e. CD doctor), you can also use basic (no fancy crap) toothpaste and a clean white cloth to try buffing out the scratch.