FTP $24 - shocking I get to play some post-flop poker ITM

[alex-star]

The villain is a fairly good regular. I've raised all-in at him twice before when he checked to me in the SB. Both times he instafolded.

What's my line here?

Full Tilt Poker
No Limit Holdem Tournament
Blinds: t150/t300
3 players
Converter

Stack sizes:
Button: t5675
SB: t4270
Hero: t3555

Pre-flop: (3 players) Hero is BB with T[img]/images/graemlins/diamond.gif[/img] 9[img]/images/graemlins/spade.gif[/img]
Button folds, SB calls t150 <font color="aaaaaa">(pot was t450)</font>, Hero checks.

Flop: 7[img]/images/graemlins/spade.gif[/img] 8[img]/images/graemlins/spade.gif[/img] 4[img]/images/graemlins/club.gif[/img] (t600, 2 players)
<font color="#cc0000">SB bets t600</font>.
<font color="#cc0000">Hero ??</font>