Hi
And thank you for responding so quickly.
Well, the programs I've been using always say it's finalizing the disc, and what I've been using for programs - are Nero ( which came with the DVD WR, and the other one I use from time to time is Cosmi DVD ripper Plus.
Normally I have done fine with them both, but for more then a month or so they will read ok, play DVD's, but not burn.
I've even gone as far as reinstalling everything, including windows xp, thinking maybe my programs became comprimized.