Overpair - villain all-in

From the Euro GP at Pokerroom today. At the start of the tournament and no reads or anyone I recognize.

100+8 Euro Grand Prix Multi Table Tournament, 3 Dec 2005 08:16 PM
Seat 1: UTG+1 ($2,980 in chips)
Seat 2: Hero [10H,10S] ($1,390 in chips)
Seat 3: MP ($3,050 in chips)
Seat 4: MP+1 ($490 in chips)
Seat 5: MP+2 ($3,100 in chips)
Seat 6: CO ($1,490 in chips)
Seat 7: Button ($120 in chips)
Seat 8: SB ($1,550 in chips)
Seat 9: BB ($1,000 in chips)
Seat 10: UTG ($1,380 in chips)
ANTES/BLINDS
SB posts blind ($15), BB posts blind ($30).

PRE-FLOP
UTG folds, UTG+1 folds, Hero calls $30, MP folds, MP+1 folds, MP+2 folds, CO bets $120, Button folds, SB folds, BB folds, Hero calls $90.

FLOP [board cards 7C,7H,8C ]
Hero bets $150, CO bets $1,370 and is all-in, Hero ????

I know my preflop limp sucks. So please mock me for it, so I won't do it again [img]/images/graemlins/smile.gif[/img]

How would you respond to villains all-in?