Robert, I had some problems with burning iso images on my XP Prof machine using a Plextor drive and Alcohol 120. Tom Michell had a few suggestions for me and you can search the archives to read them in depth. He explained why the check sums are not a guarantee that the image is good. However, I just slowed the burn speed down and I haven't have any problems since. As far as Roxio goes, I've never liked it. It has come free with almost every CD burner that I have ever owned, but I always end up buying another product. If your media is good and slowing down the burn speed doesn't fix the problem you can down load a free trial copy of a dozen or so other products and try them out. The thing about Alcohol that I like is that it doesn't leave any processes running like Real Player, Acrobat, and Nero when you shut it down. HTH Dwaine
