PLEASE REVIEW MY PLAY & CAN I FOLD HERE? $10+1 SITNGO

[Fishfood4you]

Full tilt $10+1 What would you have done differently if anything? Also can I fold the river? Thoughts on all streets please....

Full Tilt Poker Game #1938793450: $10 + $1 Sit & Go (14490257), Table 4 - 50/100 - No Limit Hold'em - 11:39:28 ET - 2007/03/07
Seat 1: HERO (2,740)
Seat 2: alc14jd45 (3,150)
Seat 3: lilpapi (2,005)
Seat 4: aiminglow (3,340)
Seat 5: quixotic78 (1,930)
Seat 6: HeadBuster06 (300)
Seat 7: HCarl (2,445)
Seat 8: VILLAIN (2,145)
Seat 9: darkman1000 (1,410)
VILLIAN posts the small blind of 50
darkman1000 posts the big blind of 100
The button is in seat #7
*** HOLE CARDS ***
Dealt to HERO [As 9s]
HERO calls 100
alc14jd45 folds
lilpapi folds
aiminglow folds
quixotic78 calls 100
HeadBuster06 folds
HCarl folds
VILLIAN calls 50
darkman1000 checks
*** FLOP *** [Qs Js Kh]
VILLIAN bets 400
darkman1000 calls 400
HERO calls 400
quixotic78 folds
*** TURN *** [Qs Js Kh] [Tc]
VILLIAN checks
darkman1000 checks
HERO bets 500
VILLIAN calls 500
darkman1000 folds
*** RIVER *** [Qs Js Kh Tc] [Jd]
VILLIAN bets 1,145, and is all in
HERO calls 1,145

I will post results after some replys
THANKS !