I just searched for 'guitar theory' at Lycos, and I found this. It looks pretty good. I also have a page that I put up on request that shows the fretboard patterns for the seven diatonic modes.
http://pages.prodigy.net/aj5000
"When you're a young, long-haired guitarist, no one takes you seriously." - John Petrucci
www.erikhagen.net
Web - Photo - Audio
www.erikhagen.net
Web - Photo - Audio