How often am I good here?

Opponent is loose/passive
I'm certain this is a premium pre-flop hand.

My flop play sucks skank ass.

PokerStars No-Limit Hold'em, $2 BB (5 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver)

MP ($198)
Button ($156.95)
Fnord ($200)
BB ($217.45)
UTG ($254.70)

Preflop: Fnord is SB with 8http://www.flopturnriver.com/phpBB2/...iles/spade.gif, 8http://www.flopturnriver.com/phpBB2/...miles/club.gif.
UTG raises to $10, 2 folds, Fnord calls $9, 1 fold.

Flop: ($22) Khttp://www.flopturnriver.com/phpBB2/...es/diamond.gif, 2http://www.flopturnriver.com/phpBB2/...es/diamond.gif, 8http://www.flopturnriver.com/phpBB2/...es/diamond.gif (2 players)
Fnord bets $15, UTG calls $15.

Turn: ($52) Qhttp://www.flopturnriver.com/phpBB2/...iles/heart.gif (2 players)
Fnord bets $40, UTG raises to $229.7, Fnord ???

I wouldnt be afraid of the flush, only KK or QQ here. Very likely he has AK or AA with the ace of diamonds.

even when villian is passive it doesnt mean his big raises are going to be nuts. usually vs passive villian nut hands arent played so strong so im never folding.

I fold this but then again I don't know how 100NL plays.