> Why is it that on my system I can put a blank CD-R or CD-RW in the
> burner and "My Computer" and "Explorer" seem to accept it, but on a
> friend's PC the CD burner returns "Drive not ready" for a blank CD and
> the burning has to be accomplished using 3rd party software? Are
> different CD drives more or less compatible with XP?
Try a different brand of media on your friends burner. Not all units are
happy will all types. The reflectivity might not be correct between the
media and the burner.
As an aside, I thought I had purchased bad media when my Lite-On burner
refused the media. After I flashed my unit with the latest firmware all
worked perfectly.
In short the problem may have nothing to do with XP at all.