How to play nut straight with 3 flush cards.

[bankrobber42]

Please comment on this hand. I had the nut straight but with three flush cards on the board I was kinda of scared.

***** Hand History for Game 921672928 *****
0/0 TexasHTGameTable (NL) - Mon Sep 06 23:12:13 EDT 2004
Table Candy Canes (Real Money) -- Seat 10 is the button
Total number of players : 10
Seat 1: white3990 ( $83.15)
Seat 2: bankrobber42 ( $121.95)
Seat 3: Akleekin ( $53.97)
Seat 4: sretih ( $120.20)
Seat 5: sjc123 ( $88.83)
Seat 6: thenew007 ( $96.30)
Seat 7: PantsOnFire1 ( $119.46)
Seat 8: bmort ( $15)
Seat 9: ROON2004 ( $89)
Seat 10: bigwb ( $84.05)
white3990 posts small blind (1)
bankrobber42 posts big blind (2)
** Dealing down cards **
Dealt to bankrobber42 [ T [img]/images/graemlins/diamond.gif[/img], 8 [img]/images/graemlins/club.gif[/img] ]
Akleekin folds.
sretih folds.
sjc123 folds.
thenew007 folds.
PantsOnFire1 calls (2)
bmort folds.
ROON2004 folds.
bigwb folds.
white3990 raises (3) to 4
bankrobber42 calls (2)
PantsOnFire1 calls (2)
** Dealing Flop ** : [ 6 [img]/images/graemlins/diamond.gif[/img], 7 [img]/images/graemlins/diamond.gif[/img], 5 [img]/images/graemlins/diamond.gif[/img] ]
white3990 checks.
bankrobber42 checks.
PantsOnFire1 checks.
** Dealing Turn ** : [ 9 [img]/images/graemlins/club.gif[/img] ]
white3990 checks.
bankrobber42 bets (10)
PantsOnFire1 calls (10)
white3990 calls (10)
** Dealing River ** : [ 5 [img]/images/graemlins/heart.gif[/img] ]
white3990 checks.
bankrobber42 checks.
PantsOnFire1 checks.
** Summary **
Main Pot: $39.90 | Rake: $2.10
Board: [ 6d 7d 5d 9c 5h ]
white3990 balance $69.15, lost $14 [ Ac Ad ] [ two pairs, aces and fives -- Ac,Ad,9c,5d,5h ]
bankrobber42 balance $147.85, bet $14, collected $39.90, net +$25.90 [ Td 8c ] [ a straight, six to ten -- Td,9c,8c,7d,6d ]
Akleekin balance $53.97, didn't bet (folded)
sretih balance $120.20, didn't bet (folded)
sjc123 balance $88.83, didn't bet (folded)
thenew007 balance $96.30, didn't bet (folded)
PantsOnFire1 balance $105.46, lost $14 [ Jh 8h ] [ a straight, five to nine -- 9c,8h,7d,6d,5d ]
bmort balance $15, didn't bet (folded)
ROON2004 balance $89, didn't bet (folded)
bigwb balance $84.05, didn't bet (folded)