Top pair, weak kicker

$100 NL Texas Hold'em - Wednesday, July 20, 12:44:59 EDT 2005
Table Table 36553 (6 max) (Real Money)
Seat 5 is the button
Total number of players : 5
Seat 2: PokerPunk_25 ( $141.45 )
Seat 3: snake30fl ( $72.30 )
Seat 5: tot23mik ( $163.10 )
Seat 6: ILDUCE444 ( $151.20 )
Seat 4: Cap_Betting ( $106.60 )
ILDUCE444 posts small blind [$0.50].
PokerPunk_25 posts big blind [$1].
** Dealing down cards **
Dealt to Cap_Betting [ Kh 9c ]
snake30fl calls [$1].
Cap_Betting calls [$1].
tot23mik folds.
ILDUCE444 calls [$0.50].
PokerPunk_25 raises [$2].
snake30fl folds.
Cap_Betting calls [$2].
ILDUCE444 calls [$2].
** Dealing Flop ** [ 3h, Kd, 6c ]
ILDUCE444 checks.
PokerPunk_25 bets [$1].
Cap_Betting raises [$6].
ILDUCE444 folds.
PokerPunk_25 raises [$19].
Cap_Betting folds.
PokerPunk_25 does not show cards.
PokerPunk_25 wins $34.90

I'm pretty sure this fold is correct, right? The tougher question is, what did he have? AK? Two pair?

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$100 NL Texas Hold'em - Wednesday, July 20, 13:50:24 EDT 2005
Table Table 36553 (6 max) (Real Money)
Seat 3 is the button
Total number of players : 6
Seat 4: Cap_Betting ( $191.60 )
Seat 2: hatch14 ( $88 )
Seat 3: drt24 ( $97 )
Seat 5: ImABroom ( $77.73 )
Seat 1: Liger59 ( $22.50 )
Seat 6: Supermaccan ( $100.55 )
Cap_Betting posts small blind [$0.50].
ImABroom posts big blind [$1].
** Dealing down cards **
Dealt to Cap_Betting [ Qh 9d ]
Supermaccan folds.
Liger59 calls [$1].
hatch14 raises [$3].
drt24 calls [$3].
Cap_Betting calls [$2.50].
ImABroom calls [$2].
Liger59 calls [$2].
** Dealing Flop ** [ 6d, Qc, 7h ]
Cap_Betting checks.
ImABroom checks.
Liger59 checks.
hatch14 bets [$8].
drt24 folds.
Cap_Betting calls [$8].
ImABroom folds.
Liger59 folds.
** Dealing Turn ** [ 8c ]
Cap_Betting checks.
hatch14 bets [$7].
Cap_Betting calls [$7].
** Dealing River ** [ 7s ]
Cap_Betting checks.
hatch14 checks.
Cap_Betting shows [ Qh, 9d ] two pairs, queens and sevens.
hatch14 shows [ As, Qd ] two pairs, queens and sevens.
hatch14 wins $43 from the main pot with two pairs, queens and sevens with ace kicker.

Should I have folded on the flop?

First hand I'm probably playing the same way, yeah its a good fold. I'm pretty sure he's got at least AK here. Second hand I'm probably folding preflop. I'd probably call from the bb, but from the sb I'm looking for a pretty good hand, like K10 or better to call 3xbb raise to avoid being dominated like in this instance. Suited connectors are good too IMO when defending blinds. On a side note, I take it you go to UofM, me too, what year are you and where you living next year?