KK gets called down on draw heavy board

converter now working...what do you guys use?
(zerodivide is down)

Main villain here is 41/20/3 over 70 hands
Sees showdown 27%, folds to a flop bet 33%

***** Hand History for Game 3197001403 *****
$25 NL Texas Hold'em - Tuesday, December 13, 22:19:52 EDT 2005
Table Table 69915 (Real Money)
Seat 8 is the button
Total number of players : 10

Seat 10: Hobbes89 ( $46.05 )
Seat 7: HERO ( $19.90 )

HomerJBetz posts small blind [$0.10].
Hobbes89 posts big blind [$0.25].

** Dealing down cards **
Dealt to HERO [ K[img]/images/graemlins/club.gif[/img] K[img]/images/graemlins/heart.gif[/img] ]
AsianFury75 folds.caldereta folds.
(3 folds)
seagull000 calls [$0.25].
HERO raises [$1.50].
(2 folds)
Hobbes89 calls [$1.25].
seagull000 folds.

** Dealing Flop (~$3) ** [ 2[img]/images/graemlins/spade.gif[/img], T[img]/images/graemlins/diamond.gif[/img], 8[img]/images/graemlins/diamond.gif[/img] ]
Hobbes89 checks.
HERO bets [$2].
Hobbes89 calls [$2].

** Dealing Turn (~$7) ** [ 9[img]/images/graemlins/spade.gif[/img] ]
Hobbes89 bets [$3].
HERO calls [$3].

** Dealing River (~$13) ** [ 4[img]/images/graemlins/spade.gif[/img] ]
Hobbes89 bets [$4].
HERO calls [$4].

Yikes. I felt very uncomfortable in this hand, even being in position.

Flop
$2 enough? Bet full pot?

Turn
Turn is pretty scary. Adds an extra spade, and puts the straight draw on the board. Villain leads. I considered a raise here, but wimped out and just called for $3 to see what happens on the river.

River
Another spade. Awesome. Now the flush and straight are both definitely out there. Here, i'm -very- glad I have position.

The call here for $4 is ok right?

I imagine my biggest mistake is not protecting my cards at either the flop or turn.

What is standard here?