NL50 - A8s river call?

[Jerome Graham]

Used to play a lot of limit but I took a break from poker and decided to come back and try NL. Couple questions on this hand.
1. Is the flop bet ok trying to build a pot with my draw?
2. Is the call down correct even tho I'm faily certain I'm beat?

Thanks

Hero - $50
MP1 - $51
BB - $58

Poker Stars
No Limit Holdem Ring game
Blinds: $0.25/$0.50
9 players
Converter (http://www.neildewhurst.com/hand-converter)

Pre-flop: (9 players) Hero is SB with A/images/graemlins/spade.gif 8/images/graemlins/spade.gif
2 folds, <font color="#cc0000">MP1 raises to $2</font>, 4 folds, Hero calls, BB calls.

Flop: T/images/graemlins/spade.gif 7/images/graemlins/spade.gif 9/images/graemlins/heart.gif ($6, 3 players)
<font color="#cc0000">Hero bets $2</font>, BB calls, <font color="#cc0000">MP1 raises to $7</font>, Hero calls, BB calls.

Turn: 8/images/graemlins/diamond.gif ($27, 3 players)
Hero checks, <font color="#cc0000">BB bets $9</font>, MP1 folds, Hero calls.

River: A/images/graemlins/heart.gif ($45, 2 players)
Hero checks, <font color="#cc0000">BB bets $14.5</font>, Hero calls.

Results:
Final pot: $74

[Imrahil]

3bet flop and get all the money in. The river is fine I think.

[wslee00]

i'd fold pf.

as played, lead flop for pot and 3-bet all-in.

[VorShot]

OOP, fold preflop.

One of the keys to NL is to play drawing hands from position only if possible.

I prob bet $3 on flop and then 3 bet all in if i didn't fold preflop.