Copy DVD to DVD bypassing Hard Drive !

[superroo]

Hi All,
I currently run DVDFab ver. 7.0.8.0 on a HP Desktop (Vista Ultimate & Windows7 dual-boot). On another desktop (XP) I am using 'Roxio' which copies a DVD to DVD using the DVD-Rom to DVD-RW direct (as far as I know it doesn't copy to Hard Drive & then to Blank DVD) which is a lot faster. I did forget to mention earlier that I do have two drives (CD-Rom & DVD-RW) on both PC's.
Is this possible using DVDFab & if so can someone advise me the directions to do so ?

Thanks, Dennis.

[Complication]

This is not possible due to the copy protection and read delays encountered on video discs. You would end up with lots of coasters (bad discs). This is especially true if you are creating a compressed DVD5.

[superroo]

Thanks for your advice & reply.
Dennis.