I floundered around with the Aux sends and the busses for ages Jason, the manual is next to useless on how to actually use them.
I read Bob's tutorial and everything clicked in to place - now I don't know how I ever manged without using them!
Have a look through Dean Roddey's excellent
tutorial in the sticky section at the top of the GT forum - there's some killer info and tips in there as well.
Steve