I'm not sure if this only to do with the ATA/66 controller - I don't have one, but the problems are still there: whenever I start up Nero (latest version, same goes for ASPI) the program starts but then, nothing happens. No splash screen, nothing. The Task Manager clearly indicates a NERO.EXE process, however. When I start up Nero a second time, I can burn CD's just fine. Still, the first process remains in memory and can't be ended. Of course, this causes problems when I want to shut down! I guess Nero perhaps isn't as W2K compliant as they claim it is...