NL200 TPGK 3 handed

[MarkL444]

Party Poker No-Limit Hold'em, $ Hero (6 max, 3 handed) converter

Hero ($376.87)
Button ($192.1)
SB ($30.73)

Preflop: Hero is BB with K[img]/images/graemlins/club.gif[/img], Q[img]/images/graemlins/spade.gif[/img]. SB posts a blind of $1.
Button calls $2, SB (poster) completes, Hero checks.

Flop: ($6) 7[img]/images/graemlins/heart.gif[/img], K[img]/images/graemlins/heart.gif[/img], 2[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(3 players)</font>
SB checks, <font color="#CC3333">Hero bets $5</font>, <font color="#CC3333">Button raises to $20</font>, SB folds, Hero?

I mine this game religously and had no stats on this guy, and hes new to the table. How do you procede from this point?