(To the mods, I don't think there is a link to the site on UR or TK, correct me if i am wrong)
Personally i think it is the best resource on the web, when i first used this for advice i was using just an EQ through a Marshall MG and it still sounded amazing. So in between my travels, trying to figure out how Yngwie and Vai get their tone i dragged out the EQ and my Dist + and gave it a whirl, and it sounds good

The best thing is the guy gives the exact settings he uses on his gear and advice on adjustments to tailor diff amps.
Anyway we seem to have a lot of news members in the last couple of months so this may help them if their interested in rhoads tone.
http://www.kolumbus.fi/kari.tammilehto/rrtone.htm
Rob
P.S. anyone know where this site is from?