early hand from $10 SnG, fold overpair?

[icemanjmw]

PokerStars Tournament, Big Blind is t20 (9 handed) Converter on pregopoker.com

UTG (t1260)
UTG+1 (t1510)
MP1 (t1740)
MP2 (t1480)
MP3 (t1470)
CO (t1580)
Button (t1440)
SB (t1520)
Hero (t1500)

Preflop: Hero is in BB with J[img]/images/graemlins/diamond.gif[/img] J[img]/images/graemlins/spade.gif[/img]
<font color="gray">UTG folds</font>, <font color="gray">UTG+1 folds</font>, <font color="red">MP1 raises to t60</font>, <font color="gray">MP2 folds</font>, <font color="gray">MP3 folds</font>, CO calls t60, <font color="gray">Button folds</font>, SB calls t50, Hero calls t40

Flop: (t240) 3[img]/images/graemlins/heart.gif[/img] 5[img]/images/graemlins/spade.gif[/img] 9[img]/images/graemlins/diamond.gif[/img] (4 players)
SB checks, <font color="red">Hero bets t120</font>, <font color="gray">MP1 folds</font>, <font color="red">CO raises to t240</font>, SB calls t240, <font color="gray">Hero ?????</font>

[mightyrick]

Poosh.

[cprice2]

Id rereaise to between 400 and 500.