Well I can tell you right now it has nothing to do with Win2000. Its all CDRWin.. Just go back to 3.7f or lower. Everyone has been having problems with 3.8 it just burns frisbees. I have at least a dozen to show for. I have burned 4 ISO's today alone with Win2000 Prof. Final today alone with CDRWin 3.7f with no problems. So its easy just go back.