ATs: completely lost with blind defense

[Dudd]

I'd posted in the big blind the hand before, so I had no read on the villian in this hand. His raise before the flop could easily have been a complete steal, so I think the 3 bet preflop is clearly correct. However, how do you react to the cap preflop? At the time I didn't give him much credit, since personally I'll sometimes cap with less than stellar cards trying to take control of the hand when my steal has gone awry. Anyways, I figured I could still be ahead on that raggedy flop, and if not, I still had two overs, so I decided to bet and see how he reacted. With two overs the flop raise seems like an easy call, but I'm thinking now that I should have given up on the turn and folded. Once I called this though and missed again on the river, I finally got the clue that I was beat and gave up. Anyone take a different line, considering that preflop against a potential stealer my hand does have some showdown value?

Party Poker 2/4 Hold'em (9 handed) converter

Preflop: Hero is BB with A[img]/images/graemlins/diamond.gif[/img], T[img]/images/graemlins/diamond.gif[/img].
<font color="#666666">6 folds</font>, <font color="#CC3333">Button raises</font>, <font color="#666666">1 fold</font>, <font color="#CC3333">Hero 3-bets</font>, <font color="#CC3333">Button caps</font>, Hero calls.

Flop: (8.50 SB) 9[img]/images/graemlins/club.gif[/img], 5[img]/images/graemlins/club.gif[/img], 8[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">Hero bets</font>, <font color="#CC3333">Button raises</font>, Hero calls.

Turn: (6.25 BB) 5[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
Hero checks, <font color="#CC3333">Button bets</font>, Hero calls.

River: (8.25 BB) J[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
Hero checks, <font color="#CC3333">Button bets</font>, Hero folds.

Final Pot: 9.25 BB