Mike, here is a link to Dan's bike fit for triathletes. I think most would say that this fit is less agressive than a pure TT fit because you are on a TT bike longer in a long distance triathlon plus you have the consideration of running off the bike. These should give you some general parameters to go by though.

http://www.slowtwitch.com/...techctr/bikefit.html

You can also check out:

http://socalttseries.com/