fix computer errors

I am trying to reload Roxio 7 after a computer crash, and every time I load it, I am getting errors.
A blue screen comes up and says
File: cdr4–xp.sys
Driver unloaded without cancelling pending operations.
Runing Windows XP Dell Dimension 2400. Have NOT loaded the new internet explorer. When I loaded them before, I lost both Cd and DVD drives. Dell fixed. But did not load Roxio again until now.
Once I get back on the computer and click on Roxio and try to do anything, it comes up with Direct DC cannot findy any supported recordable drive. Help!!!
Thanks