$55r How would you play AK in the Money

[speedyg]

This one has been bothering me since I played it a few hours ago. Villian has been quite since the bubble burst 18 hands ago. The short stack is playing a bit tight.

How should this be played?

PokerStars Tournament, Big Blind is t400 with t25 antes (3 handed) Converter on pregopoker.com

Button (t1800)
SB (t7080)
Hero (t4620)

Preflop: Hero is in BB with K[img]/images/graemlins/diamond.gif[/img] A[img]/images/graemlins/heart.gif[/img]
<font color="gray">Button folds</font>, <font color="red">SB raises to t1200</font> <font color="white"> </font>