unimproved aces, easy river call?

Only read is that villain doesn't seem that smart...
Call this river? what about the line up to this point?

Party Poker No-Limit Hold'em, $0.04 BB (6 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver)

saw flop|saw showdown

BB ($4.14)
UTG ($5.29)
MP ($4.22)
CO ($4.03)
Button ($11.48)
Hero ($4.96)

Preflop: Hero is SB with Ahttp://www.flopturnriver.com/phpBB2/...iles/heart.gif, Ahttp://www.flopturnriver.com/phpBB2/...miles/club.gif.
UTG raises to $0.08, 3 folds, Hero raises to $0.2, 1 fold, UTG calls $0.12.

Flop: ($0.44) Qhttp://www.flopturnriver.com/phpBB2/...iles/heart.gif, Thttp://www.flopturnriver.com/phpBB2/...miles/club.gif, 7http://www.flopturnriver.com/phpBB2/...iles/spade.gif (2 players)
Hero bets $0.32, UTG calls $0.32.

Turn: ($1.08) 7http://www.flopturnriver.com/phpBB2/...es/diamond.gif (2 players)
Hero bets $0.64, UTG calls $0.64.

River: ($2.36) 6http://www.flopturnriver.com/phpBB2/...miles/club.gif (2 players)
Hero bets $1.92, UTG calls $5.29 (All-In), Hero calls $4.94 (All-In).

Final Pot: $12.94

make your bet sizes so that we can get it in on the river.
Im not folding AA here despite the fact he has a 7x sometimes but a Q or T a whole lot more.