Unfortunately you can't do this with Video Studio 8. The software comes with a cut down version of DVD Movie Factory. However you can edit DVD RW disks using the full version of Movie Factory. You could always try the trial from Uleads website.
COMPAQ something or other with 500Gb Boot Disk, 1Tb external Firewire Disk, 4Gb Memory and a super duper sound card, 19" TFT Monitor etc etc etc
Sony TRV33e : Sony TRV310e : Canon XM2
Sony Vegas Studio editions to v11
Remember, there is always more to learn than there is to teach.