J10s hand, no clue what I'm doing

[ucfryan]

Haven't played 6-max in a couple of weeks, ran bad last night my first night back and kind of lost my confidence. I've never been real sure of myself in these situations with middle pair vs a large field or what to do. What's the standard line here? Does it change any if the ace is a king or queen? Anyone raise pf? Assume the typical lp party players. Any help here would be appreciated though, this is a fairly common situation that I don't think I'm playing optimally in.

Party Poker 1/2 Hold'em (6 max, 6 handed) converter

Preflop: Hero is SB with T[img]/images/graemlins/spade.gif[/img], J[img]/images/graemlins/spade.gif[/img].
UTG calls, MP calls, <font color="#666666">1 fold</font>, Button calls, Hero completes, BB checks.

Flop: (5 SB) T[img]/images/graemlins/diamond.gif[/img], 6[img]/images/graemlins/heart.gif[/img], A[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(5 players)</font>
Hero checks, BB checks, UTG checks, MP checks, Button checks.

Turn: (2.50 BB) 4[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(5 players)</font>
Hero checks, BB checks, <font color="#CC3333">UTG bets</font>, MP calls, Button calls, Hero calls, BB folds.

River: (6.50 BB) A[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(4 players)</font>
Hero checks, <font color="#CC3333">UTG bets</font>, MP folds, Button folds, Hero calls.

Final Pot: 8.50 BB

[Alobar]

bet the turn

[RunDownHouse]

Turn is a must-bet. Anyone raise the river, given the turn play?