5-10 NL I have a boat... but I can only beat a bluff here

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1st post on 2+2 so I hope it sounds ok, I heard about this from the cardrunners videos and how they always say "this guys a 2+2'er so I'm gonna try and stay away from him". 6 max 5-10 nl on Full Tilt, I have no reads at all because I usually play smaller stakes and this is like my 3rd rotation. I don't have the HH but its pretty easy to convey what I'm trying to ask here:
Im in SB with pocket nines and a $900 stack, villain has me covered
UTG limps
UTG+1 folds
CO raises to $45
Button calls
Hero calls
BB calls
UTG calls (lot of ppl to see flop in raised pot i know)
Flop 7 [img]/images/graemlins/diamond.gif[/img]7 [img]/images/graemlins/heart.gif[/img]4 [img]/images/graemlins/club.gif[/img] $225 in pot
Hero bets $110
Folded to preflop raiser who raises to $280
Hero calls $170
Turn 7 [img]/images/graemlins/spade.gif[/img] Pot $785
Hero checks, CO checks
River 2 [img]/images/graemlins/diamond.gif[/img]
Hero checks
CO bets $600
Hero?!?