DVD/CDRW with Win2K

I have a DVD/CDRW operating on Win2K. They are having problems with freezing and slowing the system as well as write errors. I have checked most of the boards and news groups and found a lot of people with same problem but no answers that wrok as yet. Have removed and clean reg of Easy cd and Direct CD. Using Nero. Also have event error Failure to start CDUDF.
Thanks