Bottom set, turn possible straight

[roggles]

What should I do on the turn here?

Full Tilt Poker
Pot Limit Omaha Ring game
Blinds: $1/$2
6 players
Converter

Stack sizes:
UTG: $45.50
UTG+1: $198.50
CO: $100
Button: $1370.90
roggles: $309.05
BB: $101.50

Pre-flop: (6 players) roggles is SB with 3[img]/images/graemlins/diamond.gif[/img] K[img]/images/graemlins/club.gif[/img] 3[img]/images/graemlins/club.gif[/img] J[img]/images/graemlins/spade.gif[/img]
2 folds, CO (poster) checks, Button folds, roggles calls, BB (poster) checks.

Flop: 7[img]/images/graemlins/spade.gif[/img] 8[img]/images/graemlins/diamond.gif[/img] 3[img]/images/graemlins/heart.gif[/img] ($6, 3 players)
<font color="#cc0000">roggles bets $6</font>, BB calls, CO calls.

Turn: 4[img]/images/graemlins/heart.gif[/img] ($24, 3 players)
roggles checks, <font color="#cc0000">BB bets $24</font>, CO calls, roggles folds.