Nut flush, how do you play it?

[Guido]

Presume no reads, how would you play it on the flop and turn?

Party Poker 10/20 Hold'em (6 max, 5 handed)

Preflop: Guido is UTG with A[img]/images/graemlins/spade.gif[/img], 9[img]/images/graemlins/spade.gif[/img].
<font color="#CC3333">Guido raises</font>, <font color="#666666">1 fold</font>, <font color="#CC3333">Button 3-bets</font>, <font color="#CC3333">SB caps</font>, BB calls, Guido calls, Button calls.

Flop: (16 SB) K[img]/images/graemlins/spade.gif[/img], 6[img]/images/graemlins/spade.gif[/img], 4[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(4 players)</font>
<font color="#CC3333">SB bets</font>, <font color="#CC3333">BB raises</font>, Guido calls, Button calls, <font color="#CC3333">SB 3-bets</font>, BB calls, Guido calls, Button calls.

Do you 3-bet? Do you cap?

Turn: (14 BB) 8[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(4 players)</font>
SB checks, <font color="#CC3333">BB bets</font>, Guido calls, Button calls, SB folds.

Do you raise?

River: (17 BB) A[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(3 players)</font>
<font color="#CC3333">BB bets</font>, <font color="#CC3333">Guido raises</font>, Button folds, BB calls.

Thanks,

Guido