K6s Flops 2 Pair in the Big Blind

[CWsports]

Please advise how you would play this hand.

Party Poker 0.5/1 Hold'em (9 handed) converter (http://www.selachian.com/tools/bisonconverter/hhconverter.cgi)

Preflop: Hero is BB with K/images/graemlins/heart.gif, 6/images/graemlins/heart.gif.
UTG folds, UTG+1 folds, MP1 folds, MP2 folds, MP3 calls, CO calls, Button folds, SB folds, Hero checks.

Flop: (3.50 SB) 6/images/graemlins/club.gif, 7/images/graemlins/diamond.gif, K/images/graemlins/club.gif <font color="blue">(3 players)</font>
<font color="CC3333">Hero bets</font>, MP3 calls, <font color="CC3333">CO raises</font>, <font color="CC3333">Hero 3-bets</font>, MP3 calls, CO calls.

Turn: (6.25 BB) A/images/graemlins/diamond.gif <font color="blue">(3 players)</font>
<font color="CC3333">Hero bets</font>, MP3 calls, <font color="CC3333">CO raises</font>, Hero calls, MP3 calls.

River: (12.25 BB) T/images/graemlins/spade.gif <font color="blue">(3 players)</font>
Hero checks, <font color="CC3333">MP3 bets</font>, <font color="CC3333">CO raises</font>, Hero calls, MP3 calls.

Final Pot: 18.25 BB
<font color="green">Main Pot: 18.25 BB, between Hero, MP3 and CO.</font>

[CrazyEyez]

Turn: I'd 3-bet. Maybe that's dumb?

River: I might have to lay this down. I'd have to think MP3 hit a straight in which case he'll probably re-raise and your stuck calling again. And you still don't know if you can beat CO.
I'd like to see other comments on this one.

[edfurlong]

Yeah thats a tough river if you're worried about paying 4 bets for it. I'd probably play the same except I wouldn't slow down on the turn. I also would like to hear from someone that actualy knows what he or she is talking about.

Err read that as I don't know what I'm talking about, not crazy eyes /images/graemlins/blush.gif

[CWsports]

Results in green below: <font color="green">
Hero has Kh 6h (two pair, kings and sixes).
MP3 has As Ah (three of a kind, aces).
CO has Ks Ac (two pair, aces and kings).
Outcome: MP3 wins 18.25 BB. </font>