well... basicly the only real working webcams from easy to find brands are: logitech quickcam pro 4000 and an old philips one...
I got the quickcam pro 4000 myself and it works, on ebay you might find them now and then because they are all out of production
here is a list anyway:
http://wl500g.info/showthread.php?t=63
I don't recommend the logitech orb, since there are 2 versions of them... 1 works, the other doesn't, so you have a 50/50 chance it works