Underpair on paired board

I believe a raise is in order to see what villain has, but what do you guys think?

Hand #11107855-12397 at Cavan (No Limit Hold'em)
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Started at 30/Jan/06 22:40:42

freechus is at seat 0 with $9.85.
jander1012 is at seat 1 with $2.45.
jwaaaa is at seat 2 with $5.10.
Mad Ukraine is at seat 3 with $7.
Whlgnr is at seat 4 with $16.15.
ironruffneck is at seat 5 with $4.90.
frnkly is at seat 6 with $4.45.
r3d2 is at seat 7 with $9.80.
ACETRIPP is at seat 8 with $14.38.
The Intern is at seat 9 with $6.
The button is at seat 0.

jander1012 posts the small blind of $.05.
jwaaaa posts the big blind of $.10.

freechus: 7s 7d
jander1012: -- --
jwaaaa: -- --
Mad Ukraine: -- --
Whlgnr: -- --
ironruffneck: -- --
frnkly: -- --
r3d2: -- --
ACETRIPP: -- --
The Intern: -- --

Pre-flop:

Mad Ukraine calls. Whlgnr folds. ironruffneck
calls. frnkly folds. r3d2 folds. ACETRIPP folds.
The Intern folds. freechus raises to $.50.
jander1012 folds. jwaaaa calls. Mad Ukraine folds.
ironruffneck calls.

Flop (board: 9d 2d 9h):

jwaaaa bets $.30. ironruffneck folds. freechus...

30c into a $1.50 pot? He is betting his flush draw or he also has a pair - A2, 44, etc. Definite reraise situation because of the flush draw possibility in my opinion. Don't overdo it - don't want to give odds to the flush draw, but don't want to get beat up if he was donk-betting the 9.