Preflop vs. Unknowns

first orbit at table

Party Poker 10/20 (6max, 6handed)

Preflop: Hero is Button with 8[img]/images/graemlins/club.gif[/img], 8[img]/images/graemlins/spade.gif[/img].
1 fold, MP raises, CO calls, Hero 3-bets...

is this good?
what is your 3-bet range here?
what is your calling range?