Getting donked on the flop 25NL 6M

[NDHand]

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

CO ($38.22)
Button ($21.80)
SB ($25.55)
BB ($70.03)
UTG ($73.39)
Hero ($27.10)

Preflop: Hero is MP with J[img]/images/graemlins/heart.gif[/img], A[img]/images/graemlins/spade.gif[/img]. SB posts a blind of $0.10.
<font color="#666666">1 fold</font>, <font color="#CC3333">Hero raises to $1</font>, <font color="#666666">2 folds</font>, SB (poster) calls $0.90, <font color="#666666">1 fold</font>.

Flop: ($2.25) 5[img]/images/graemlins/heart.gif[/img], 9[img]/images/graemlins/spade.gif[/img], 6[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">SB bets $1.02</font>, Hero ???


This is a situation that's still a bit tricky for me. Chances are i'm drawing live and im probably ahead of some straight draws he might be betting. What's the plan though? Raise? Call, planning to fold on the turn? How about floating and betting the turn if he doesnt bet? What about folding? I'm still confused about the best line here without a good read on villain.