I am running Win XP with CloneCD, Easy CD Creator 5.02b, CDrWin4.0b, and the I installed Nero 5.5.5.6. That instantly screwed up my system. I had the same problems as those of you above who lose the ability to use ANY of their CD-Rom drives. Same thing here --> they show up in the device manager w/yellow marks , but my system couldn't find them. I had to re-install Win XP because just un-installing Nero didn't work. Best advice I can give (which I got from a few very smart experts) is not to use any Nero above 5.5.4.0. Both Nero's 5.5.5.1 and 5.5.5.6 WILL most likely screw up your system, big-time!! ***** the Cat (WTC=software GOD) from The Software Cracking Forum said if you have to use Nero, only use 5.5.4.0!
Goodluck all