I don't find a fold here (except preflop), but is it better to call or push to determine what the guy OTB is up to?

No read on the OTB guy; Mister .com has been playing pretty tightly and has show down two suited non-connectors - once picking up a tiny pot and once slowplaying a flopped flush from LP.

#Game No : 3325115002
***** Hand History for Game 3325115002 *****
$25 NL Texas Hold'em - Friday, January 06, 15:53:10 EDT 2006
Table Table 80138 (No DP) (Real Money)
Seat 3 is the button
Total number of players : 10
Seat 6: Wish_4_AA ( $28.60 )
Seat 9: ksu424 ( $29.42 )
Seat 8: TheChipGimp ( $26.20 )
Seat 4: TheGaryLee ( $29.40 )
Seat 2: twinniie ( $13.05 )
Seat 5: issoeasy_com ( $9.25 )
Seat 10: Bread_Win_Er ( $24.65 )
Seat 7: ooPudge420oo ( $5.15 )
Seat 3: roaddawg22 ( $30.49 )
Seat 1: Alegendxx ( $5.50 )
TheGaryLee posts small blind [$0.10].
issoeasy_com posts big blind [$0.25].
** Dealing down cards **
Dealt to TheChipGimp [ 9h 7h ]
Wish_4_AA folds.
ooPudge420oo folds.
TheChipGimp raises [$1].
ksu424 folds.
Bread_Win_Er folds.
twinniie folds.
roaddawg22 calls [$1].
TheGaryLee folds.
issoeasy_com calls [$0.75].
** Dealing Flop ** [ 7d, 6d, 9c ]
issoeasy_com checks.
TheChipGimp bets [$2].
roaddawg22 calls [$2].
issoeasy_com is all-In [$8.25]