NL newb asks: how do you play this top two pair?

[brian94709]

***** Hand History for Game 2509284823 *****
$50 NL Texas Hold'em - Wednesday, August 10, 01:23:32 EDT 2005
Table Table 37025 (6 max) (Real Money)
Seat 3 is the button
Total number of players : 4
Seat 1: maximus0420 ( $96.60 )
Seat 3: bjb33 ( $55.80 )
Seat 4: Jonmiklthor ( $32.70 )
Seat 5: brian94709 ( $48.65 )
Jonmiklthor posts small blind [$0.25].
brian94709 posts big blind [$0.50].
** Dealing down cards **
Dealt to brian94709 [ Ac 9d ]
maximus0420 calls [$0.50].
bjb33 calls [$0.50].
Jonmiklthor folds.
brian94709 checks.
** Dealing Flop ** [ 7c, Ad, 9c ]
brian94709 bets [$2].
maximus0420 raises [$4].
bjb33 folds.
brian94709 raises [$8].
maximus0420 is all-In [$92.10]
KEN_34 has joined the table.
brian94709 is all-In [$38.15]
** Dealing Turn ** [ Td ]
** Dealing River ** [ Kd ]