another frustrating hand

busted out later on the bubble probably because of this. when do i make a move? his call tells me nothing as to whether he has overcards or a better pair.

***** Hand History for Game 3081331583 *****
NL Texas Hold'em $5 Buy-in + $1 Entry Fee Trny:17651713 Level:7 Blinds(150/300) - Wednesday, November 23, 03:57:15 EDT 2005
Table Table 67184 (Real Money)
Seat 3 is the button
Total number of players : 5
Seat 6: heret1k ( $1770 )
Seat 5: rock787 ( $920 )
Seat 8: Kenok13 ( $925 )
Seat 1: loftyroller ( $2055 )
Seat 3: sushi4747 ( $2330 )
Trny:17651713 Level:7
Blinds(150/300)
** Dealing down cards **
Dealt to heret1k [ Jh Kc ]
Kenok13 calls [300].
loftyroller folds.
sushi4747 folds.
rock787 folds.
heret1k checks.
** Dealing Flop ** [ 7c, Qs, Jc ]
heret1k bets [300].
Kenok13 calls [300].
** Dealing Turn ** [ 9d ]
heret1k bets [300].
Kenok13 calls [300].
** Dealing River ** [ Ts ]
heret1k is all-In [870]
Kenok13 is all-In [25]