AJo, late PF raise

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Party Poker 2/4 Hold'em (9 handed) converter (http://www.selachian.com/tools/bisonconverter/hhconverter.cgi)

Preflop: Hero is MP3 with A/images/graemlins/diamond.gif, J/images/graemlins/spade.gif. CO posts a blind of $2.
<font color="666666">1 fold</font>, UTG+1 calls, MP1 calls, <font color="666666">1 fold</font>, <font color="CC3333">Hero raises</font>, CO (poster) calls, <font color="666666">2 folds</font>, BB calls, UTG+1 calls, MP1 folds.

Flop: (9.50 SB) T/images/graemlins/club.gif, 6/images/graemlins/heart.gif, 7/images/graemlins/club.gif <font color="blue">(4 players)</font>
BB checks, UTG+1 checks, <font color="CC3333">Hero bets</font>, CO calls, BB folds, UTG+1 calls.

Turn: (6.25 BB) K/images/graemlins/diamond.gif <font color="blue">(3 players)</font>
UTG+1 checks, Hero checks, CO checks.

River: (6.25 BB) K/images/graemlins/spade.gif <font color="blue">(3 players)</font>
UTG+1 checks, Hero checks, <font color="CC3333">CO bets</font>, UTG+1 folds, Hero calls.

Final Pot: 8.25 BB
<font color="green">Main Pot: 8.25 BB, between Hero and CO.</font>

[Surfbullet]

any thoughts on the pf raise?