This horror has happened to me. It was called Adaptec DirectCD 4.01. I had to do a lot of low-level messing with the registry to get it back.
In my case, it removed access to the DVD file system type when I ran Windows 2000 Professional on my Dell.
I will never install another "DirectCD" type product on my PCs again. The one in XP is enough, thank you
.
BTW, how is the T|X?
Mitch