Well, you could always copy the VOB to your PC and rename it from .VOB to .MPG and then bring it into After Effects. But I don't think you are going to be happy. I use ImToo DVD Ripper and it works fine converting to AVI for me to use in Premiere Pro ot After Effects. I don't see any compression problems to speak of.
Steven
Adobe Premiere Pro 1.5 / After Effects 6.5 Pro
http://www.stevengotz.com/premiere.htm
Learning Adobe Premiere Pro 1.5
http://www.lynda.com
Contributing Writer, PeachPit Press, Visual QuickPro Guide, Premiere Pro 1.5