Paired my ace on the river...do I raise, fold, or call?

[iheartponeez]

I'm sorry if these posts are all obvious questions. I'm a bit new and still learning a lot. So here's my situation, Villain is 45.45/15.79/.64

PokerStars No-Limit Hold'em, $0.25 BB (6 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

MP ($24.50)
CO ($23.30)
Hero ($24.90)
SB :#A500AF(Villain)/ ($41.05)
BB ($56.95)
UTG ($14.60)

Preflop: Hero is Button with Q[img]/images/graemlins/heart.gif[/img], A[img]/images/graemlins/heart.gif[/img].
<font color="#666666">3 folds</font>, <font color="#CC3333">Hero raises to $1</font>, SB :#A500AF(Villain)/ calls $0.90, <font color="#666666">1 fold</font>.

Flop: ($2.25) J[img]/images/graemlins/spade.gif[/img], 9[img]/images/graemlins/heart.gif[/img], 8[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
Villain checks, <font color="#CC3333">Hero bets $2</font>, Villain calls $2.

Turn: ($6.25) 4[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
Villain checks, Hero checks.

River: ($6.25) A[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">Villain bets $2.75</font>, Hero calls $2.75.

Final Pot: $11.75


So do you think I should have raised or folded? Or was my cold call okay?