I have lately been dabbling in the so-called "fine" arts, and over at wetcanvas.com they have a pretty active airbrush forum. The search function at the site works great, btw. Also, if you register you get a $5 Dick Blick coupon.
Hope you find it useful:
http://www.wetcanvas.com/forums/forumdisplay.php?f=114
Worthwhile Airbrush Forum at Wet Canvas
Moderators: DasPhule, Moderators
Worthwhile Airbrush Forum at Wet Canvas
"Everyone has their illusions, far be it from me to take away yours." - Mok, in the film "Rock 'n Rule"