Another hand

PokerStars No-Limit Hold'em, $0.02 BB (6 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver)

UTG ($1.57)
MP ($1)
CO ($4.88)
Button ($4.78)
SB ($2.09)
Hero ($2.70)

Preflop: Hero is BB with Ahttp://www.flopturnriver.com/phpBB2/...iles/spade.gif, 4http://www.flopturnriver.com/phpBB2/...iles/spade.gif. CO posts a blind of $0.02.
UTG calls $0.02, MP calls $0.02, CO (poster) checks, Button raises to $0.1, 1 fold, Hero calls $0.08, UTG folds, MP folds, CO calls $0.08.

Flop: ($0.35) Khttp://www.flopturnriver.com/phpBB2/...miles/club.gif, Khttp://www.flopturnriver.com/phpBB2/...es/diamond.gif, Ahttp://www.flopturnriver.com/phpBB2/...miles/club.gif (3 players)
Hero checks, CO checks, Button checks.

Turn: ($0.35) Qhttp://www.flopturnriver.com/phpBB2/...iles/spade.gif (3 players)
Hero bets $0.2, CO folds, Button calls $0.20.

River: ($0.75) 5http://www.flopturnriver.com/phpBB2/...miles/club.gif (2 players)
Hero bets $0.5, Button raises to $2.4, Hero calls $1.90 (All-In).

Final Pot: $5.55


Now the flop scared me with the 2 kings, but when everyone checked the flop I figured noone had the set. On the turn I figured him for a queen in his hand, perhaps with an Ace. No change on the River, thought he believed he had me with 2K,2Q. Any feedback on my betting appreciated.

I'm folding this preflop. A-crap soooted has really bad reverse implied odds if you lose a lot of money when the flop comes A high (because if somebody has A5 or better you could be outkicked). If I had to take a guess I'd say that's what he had since he raised preflop.

If you are calling this (which I wouldn't) then you should be playing for 2 pair or better and NOT just a pair of aces.

Yeah, I'm always a bit unsure about that. Main reason I called pre-flop is that not many hands on this table have gone past the flop, and when they have its generally turned out that people havnt had a bunch in their hands.

Other than that, once flopped (if in another scenario say I'd had A9s or something a bit better), how would you have seen the post flop game out? I'm on the two highest pairs possible, but everyone else is sharing the 2Ks...