Don,
Don't be afraid to grab ahold of those autothrottles and "augment" their movement. Too many times I've seen folks sit there and watch the autothrottles do things they knew wasn't right but didn't know how to intervene. The autothrottles won't disconnect even if you slam'em around from firewall to idle unless you pickle the thumb disconnect switch and they won't fight you, ah...well..like the Scarebus autothrottles do.
If you feel the power coming up under your hand simply because you momentarily raised the nose (but didn't mean to), simply grab the throttles and pull them back a little or stop their movement. In a word...be pro-active and not just a passive observer with the autothrottles. When everything's under control, release your hand pressure and let the autothrottles do there thing. Smoothness is key to flying an ILS with autothrottles engaged. Minor pitch changes=minor autothrottle movement.
Here's another tip:
The B75/76 have BIG windows. That means that the rwy will appear to be about in the middle of the windscreen on a normal visual/ILS approach instead of near the bottom like in the B727. The first time you see this I'll guarantee you'll instinctively try to raise the nose to put the rwy on the point of the windscreen you're use to seeing the last 10 or so years. The impulse to do this becomes greater the closer to the rwy you get and then whole thing about chasing the autothrottles comes into play. Everybody goes high initially and/or begins to flare too high until they get the sight picture down. The big forward windows create this illusion. Remember that when you first get into the sim training.
My advice and I became horse more than once saying it to students over and over: Fly the flight director!! It's 10 times better than what you had on the B727 and it'll be your best friend hand flying single engine ILS's to 100' in the sim.
Have fun!
Bill