(22) overpair on a very draw heavy board

I really didn't know how to play this.

***** Hand History for Game 3166960136 *****
NL Texas Hold'em $20 Buy-in + $2 Entry Fee Trny:18105754 Level:2 Blinds(15/30) - Thursday, December 08, 18:39:06 EDT 2005
Table Table 67097 (Real Money)
Seat 1 is the button
Total number of players : 9
Seat 1: campingboy ( $675 )
Seat 2: J_DAKOTA_W ( $855 )
Seat 3: samgeo ( $2225 )
Seat 4: LuckeeFin ( $825 )
Seat 5: Ringo_Mojo ( $240 )
Seat 6: badcards30 ( $955 )
Seat 7: bosoxgek ( $795 )
Seat 9: Zbeldino ( $745 )
Seat 10: satchle ( $685 )
Trny:18105754 Level:2
Blinds(15/30)
** Dealing down cards **
Dealt to Zbeldino [ Th Ts ]
LuckeeFin calls [30].
Ringo_Mojo folds.
badcards30 folds.
bosoxgek folds.
Zbeldino calls [30].
satchle calls [30].
campingboy folds.
J_DAKOTA_W folds.
samgeo checks.
** Dealing Flop ** [ 6d, 7s, 8s ]
samgeo checks.
LuckeeFin checks.
Zbeldino bets [100].
satchle raises [300].
samgeo folds.
LuckeeFin folds.
>You have options at Table 66873 Table!.
Your time bank will be activated in 5 secs. If you do not want it to be used, please act now.
Zbeldino will be using his time bank for this hand.
>You have options at Table 67641 Table!.
Zbeldino folds.
satchle does not show cards.
satchle wins 535 chips