What to do with TPTK facing an all-in.

I'd been on a rush of good hands, for example holding KK on the button, seeing a 4XBB raise ahead of me, followed by two callers. I pump it up to 20XBB and take down the pot. I was betting and raising a lot although I held good hands I had probably a rather LAG image here, and villian seemed a fairly good player, no mug anyway.

Is this a call or a fold? Apologies if a standard decision, how's my play on all streets?

Party Poker No-Limit Hold'em, $ BB (10 handed) converter

SB ($13.70)
BB ($2.40)
UTG ($20.45)
UTG+1 ($23.65)
UTG+2 ($26.95)
MP1 ($32.39)
MP2 ($8.70)
MP3 ($23.90)
Hero ($69.45)
Button ($25.65)

Preflop: Hero is CO with A[img]/images/graemlins/club.gif[/img], K[img]/images/graemlins/heart.gif[/img]. SB posts a blind of $0.10.
<font color="#666666">3 folds</font>, MP1 calls $0.25, <font color="#666666">2 folds</font>, <font color="#CC3333">Hero raises to $1</font>, Button calls $1, <font color="#666666">2 folds</font>, MP1 calls $0.75.

Flop: ($3.35) 9[img]/images/graemlins/club.gif[/img], 3[img]/images/graemlins/heart.gif[/img], A[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(3 players)</font>
MP1 checks, <font color="#CC3333">Hero bets $2.5</font>, Button folds, MP1 calls $2.50.

Turn: ($8.35) T[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
MP1 checks, <font color="#CC3333">Hero bets $6</font>, MP1 calls $28.89 (All-In).

Final Pot: $43.24

[amoeba]

I fold.