Play after a raise on paired board

[Brash620]

Royal vegas 2/4 10 handed
Blinds seem to be ok. Haven't done anything stupid but haven't done anything to great either

Preflop: Hero is button with 9 [img]/images/graemlins/diamond.gif[/img] 9 [img]/images/graemlins/heart.gif[/img]
7 folds, <font color="red"> Hero raises </font> , sb folds, bb calls.

Flop: (4.5 sb) 10 [img]/images/graemlins/diamond.gif[/img] 3 [img]/images/graemlins/club.gif[/img] 10 [img]/images/graemlins/spade.gif[/img] <font color="blue"> (2 players) </font>
sb checks, <font color="red"> Hero bets </font>...

My question is how would you play this if sb raise?