Getting good sounding synthetic guitars is a hard thing to do. I used to make rock tracks that utilized garage bands synth guitars, but I kind of stopped because it was just too hard to get them to sound right (though in my own defense I felt I was really close to nailing it.)
My offer still stands. If you want any help with garage band, just send me a pm, or contact me through AIM. Trust me, I have a lot of experience with the program and there's a lot I can help you with.
Decent song! Loving the sax solo! Major respect! (One thing I didn't like was some of the guitar notes, they were a bit off for me in terms of timing...) Nice!