I played this hand horrible

[TheyCallMeDonk]

Party Poker - No Limit Hold'em Cash Game - $0.25/$0.50 Blinds - 6 Players - (LegoPoker HH Converter)

Hero (SB): $49.50
BB: $25.77
UTG: $49.25
MP: $61.12
CO: $42.41
BTN: $49.25

Reads: <font color="blue">New to party second day. Villain is 17/6/2.75 over 100 hands.</font>

Preflop: Hero is dealt 6[img]/images/graemlins/diamond.gif[/img] 8[img]/images/graemlins/diamond.gif[/img] (6 Players)
<font color="red">UTG raises to $2.00</font>, MP calls $2.00, CO calls $2.00, BTN folds, Hero calls $1.75, BB folds

Flop: ($8.50) 6[img]/images/graemlins/club.gif[/img] 7[img]/images/graemlins/heart.gif[/img] 6[img]/images/graemlins/spade.gif[/img] (4 Players)
Hero checks?
1. Should I call preflop?
2. Okay I hit like a rocket, he obv got AA KK QQ how do I get payed here?