Missed AK - how to proceed

Again, new to the table - no real reads. Should I be betting this flop? If not, should I be calling down or bowing out on the turn?

Party Poker 3/6 Hold'em (10 handed) internettexasholdem.com

Preflop: Hero is Button with A[img]/images/graemlins/club.gif[/img], K[img]/images/graemlins/heart.gif[/img]. UTG posts a blind of $3.
<font color="#666666">2 folds</font>, MP1 calls, <font color="#666666">3 folds</font>, <font color="#CC3333">Hero raises</font>, <font color="#666666">1 fold</font>, <font color="#CC3333">UTG (poster) 3-bets</font>, MP1 calls, Hero calls.

Flop: (9.33 SB) 3[img]/images/graemlins/spade.gif[/img], 7[img]/images/graemlins/diamond.gif[/img], T[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(4 players)</font>
UTG checks, MP1 checks, Hero checks.

Turn: (4.66 BB) 4[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(4 players)</font>
<font color="#CC3333">UTG bets</font>, MP1 folds, Hero folds.

Final Pot: 5.66 BB