flopped set against calling station

[diconoclastx]

How did I play this hand? Is everything textbook? I figured if the calling station (VPIP 60, POSTFLOP AGGRESSION < 1) had an overpair, he won't lay it down.

***** Hand History for Game 2563091528 *****
$600 NL Texas Hold'em - Friday, August 19, 19:25:19 EDT 2005
Table Table 36556 (6 max) (Real Money)
Seat 4 is the button
Total number of players : 6
Seat 5: HERO ( $1866.95 )
Seat 3: harleycat333 ( $1591.72 )
Seat 6: DMFG26 ( $627.40 )
Seat 4: farmedfish ( $1826.10 )
Seat 1: ninersbaby ( $597.85 )
Seat 2: carmen188 ( $204.95 )
HERO posts small blind [$3].
DMFG26 posts big blind [$6].
** Dealing down cards **
Dealt to HERO [ 5d 5s ]
ninersbaby calls [$6].
carmen188 calls [$6].
harleycat333 raises [$24].
farmedfish folds.
HERO calls [$21].
DMFG26 calls [$18].
ninersbaby calls [$18].
carmen188 calls [$18].
** Dealing Flop ** [ 3h, 5c, Td ]
HERO checks.
DMFG26 checks.
ninersbaby checks.
carmen188 checks.
harleycat333 bets [$118].
HERO calls [$118].
DMFG26 folds.
ninersbaby folds.
carmen188 folds.
** Dealing Turn ** [ 8d ]
HERO bets [$259].
harleycat333 calls [$259].
** Dealing River ** [ 6d ]
HERO pushes.