[tewall]

If you raise AA you're hoping you'll get re-raised, so you can go allin. AA is a huge favorite pre-flop, but not that good a hand if it doesn't improve with deep stacks against several opponents. It needs to be played very cautiously in this situation.

You can play it like 45suited said; limp re-raise. This gives you a chance to get all-in if you're raised, and if not, it's easier to get away from if you don't like the flop or someone shows a lot of strength.

Once the blinds start to become more significant you can commit to it without it's improving as players will usually not have a hand better than TPTK.

Also the way you suggested playing it by making a big raise is reasonable. You could raise to 1/6th of the appropriate stack, and anyone who called would be making a mistake. The downside of this is you're likely to just win the blinds, and AA is too good to just win the blinds.