Try the followin site for a bit of info on ISO-13346 & UDF & a link to Adaptec drivers for NT4 - I haven't looked so I don't know whether the drivers work for any CD readers
http://www.fadden.com/cdrfaq/faq06.html#
Mike
"I can live with doubt and uncertainty and not knowing. I think it is much more interesting to live not knowing than to have answers that might be wrong." - Richard Feynman