I'd vote for the webcam, too -- I've done some afocal with my DSLR in my dob, but the webcam is great if you want to do prime focus. I'm still very much a beginner at it all, but if you want to see what I've been able to do, both afocal with the DSLR and prime focus with the webcam, check out my gallery:
http://electronaut.linuxgamers.net/g...rophotography/