(.10/.25) 99 turns into straight and villiain pushes

POKERSTARS GAME #3164819736: HOLD'EM NO LIMIT ($0.10/$0.25) - 2005/11/26 - 15:24:16 (ET)
Table 'Dardanos' Seat #5 is the button
Seat 1: AllNAll ($5.90 in chips)
Seat 2: dixiebabes ($28.55 in chips)
Seat 3: ShrimpHouse ($25 in chips)
Seat 4: DDeacon ($20.65 in chips)
Seat 5: wer555 ($18.25 in chips)
Seat 6: Sacknap ($7.90 in chips)
Sacknap: posts small blind $0.10
AllNAll: posts big blind $0.25
*** HOLE CARDS ***
Dealt to ShrimpHouse [9c 9d]
dixiebabes: calls $0.25
ShrimpHouse: raises $0.50 to $0.75
DDeacon: folds
wer555: folds
Sacknap: folds
AllNAll: calls $0.50
dixiebabes: calls $0.50
*** FLOP *** [8d 7c 5c]
AllNAll: bets $0.25
dixiebabes: calls $0.25
ShrimpHouse: raises $2.50 to $2.75
AllNAll: folds
dixiebabes: calls $2.50
*** TURN *** [8d 7c 5c] [6h]
dixiebabes: checks
ShrimpHouse: bets $7.50
dixiebabes: calls $7.50
*** RIVER *** [8d 7c 5c 6h] [5d]
dixiebabes: bets $17.55 and is all-in
ShrimpHouse: ?

At this point I had put villain on either a flush draw or two overcards. The 5 on the river was not a good card for me but my 99's did give me the top end of a straight. What is my action?

[Maulik]

Call.

I think if he flopped or turned 3 of a kind he would have already played back at you. That and this is NL25, its likely he has three fives.

[Maulik]

also,

find a hand converter & use it