(PP $25 6max) Overpair, villain keeps minbetting

[PietM]

First orbit at this table, so no reads. What should I do here? Is this a fold, or should I just call it down? After he calls my raise on the flop en bets again I guess I'm beat here, right?

Party Poker No-Limit Hold'em, $0.25 BB (4 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

SB ($23.50)
BB ($42.30)
UTG ($21.20)
PietM ($24.65)

Preflop: PietM is Button with T[img]/images/graemlins/heart.gif[/img], T[img]/images/graemlins/club.gif[/img]. SB posts a blind of $0.10.
<font color="#666666">1 fold</font>, <font color="#CC3333">PietM raises to $1</font>, SB (poster) calls $0.90, <font color="#666666">1 fold</font>.

Flop: ($2.25) 9[img]/images/graemlins/spade.gif[/img], 8[img]/images/graemlins/club.gif[/img], 9[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">SB bets $0.25</font>, <font color="#CC3333">PietM raises to $2</font>, SB calls $1.75.

Turn: ($6.25) 4[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">SB bets $0.25</font>, PietM ?