Yes, you can backup DVD and VCD (Frankly speaking you can backup nearly everything...)
I can tell you how to backup DVD:
Get yourself the following tools:
The ones with (GCW) can be downloaded on Gamecopyworld, as far as I know.
Otherwise go to
www.7thzone.com
1.DVD-Ripper (e.g. DOD Speed Ripper)(GCW)
2.DivX
Codec
3.FlaskMpeg
4.VirtualDub (GCW?)
When you've got these you have all you need...
1.Rip the DVD files to your Harddrive
2.Convert the VOB files to AVI files by using FlaskMpeg and the DivX
Compression
(For all the settings check out the help files included in the Tools)
3.Encode the audio files with VirtualDub
4.Burn your output file onto a CD-Rom
5.Enjoy the high quality (not as good as DVD, but still superb) video
NB: You'll need at least 8GB on your HD and about 15 hours to encode the video file, the audio takes only about 15 minutes...
For further help just mail to this forum,
DB69