QT button, faces donkbet

[Rounder101]

Its a pretty simple hand, but this is a spot Im having trouble with, when I get donkbet.
Full Tilt No-Limit Hold'em, $1 BB (6 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

Hero ($100)
SB ($103.50)
BB ($40.95)
UTG ($91.20)
MP ($156.95)
CO ($117.55)

Preflop: Hero is Button with T[img]/images/graemlins/club.gif[/img], Q[img]/images/graemlins/club.gif[/img].
<font color="#666666">3 folds</font>, <font color="#CC3333">Hero raises to $3.5</font>, SB calls $3, <font color="#666666">1 fold</font>.

Flop: ($8) T[img]/images/graemlins/spade.gif[/img], 4[img]/images/graemlins/spade.gif[/img], J[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">SB bets $3</font>, Hero??

I hate this donkbets, never know what they mean. I know folding isnt an option but just dont get whats better, raising and give myself a better idea of where Im at, or just call this for pot control?