Standard wk ovrpair ?

[Bump_Bailey]

Full Tilt Poker, $1/$2 NL Hold'em Cash Game, 5 Players
LegoPoker Hand History Converter

CO: $204
Hero (BTN): $404
SB: $210.15
BB: $390
UTG: $205

Pre-Flop: 9[img]/images/graemlins/club.gif[/img] 9[img]/images/graemlins/spade.gif[/img] dealt to Hero (BTN)
UTG folds, <font color="red">CO raises to $7</font>, <font color="red">Hero raises to $24</font>, 2 folds, CO calls $17

Flop: ($51) 3[img]/images/graemlins/spade.gif[/img] 6[img]/images/graemlins/heart.gif[/img] 8[img]/images/graemlins/club.gif[/img] (2 Players)
CO checks, Hero

I don't remember seeing this villain before, but he is multi tabling FWIW. This is the first time he has opened in 2 or 3 orbtis but PAHUD stats haven't popped up yet. Sorry if this post is dumb but I don't know what to do vs an unknown.
Bet/call, Bet/Fold, Chk Behind?