AJs in Stars $3 rebuy - Fold?

Basically, that's it. Should I fold? If I do, my M is about 12. Oh, no real reads on villian. Table in general had seemed kinda loose. Hadn't been paying much attention as boredom had set in (I know, I know, ---EV, bad, I know). Oh, also, with my stack, do I limp AJs and call a raise or raise myself?

Thanks,
Will

PokerStars No-Limit Hold'em Tourney, Big Blind is t600 (9 handed) converter

UTG (t24246)
UTG+1 (t5010)
Hero (t18027)
MP2 (t26045)
MP3 (t14310)
CO (t62408)
Button (t25236)
SB (t39868)
BB (t17969)

Preflop: Hero is MP1 with A[img]/images/graemlins/diamond.gif[/img], J[img]/images/graemlins/diamond.gif[/img].
<font color="#666666">2 folds</font>, <font color="#CC3333">Hero raises to t1800</font>, <font color="#666666">4 folds</font>, <font color="#CC3333">SB raises to t16800</font>, <font color="#666666">1 fold</font>, <font color="#CC3333">Hero...

[Firefly]

Good raise, but this is a definate fold.
I doubt he comes over the top with AT, so either you are probally dominated or coinfipping. Your stack is still rather healty, so i'd fold here.