George Burley's men have had mixed results so far, opening with a demoralising defeat in Macedonia before leaving Iceland with an impressive victory.

Butcher has no doubts about the Scots' ability to put another three points on the board at Hampden this weekend - but only if the mental approach to the game is right.

With Holland favourites to top Group 9, Norway are regarded as Scotland's biggest competitors for the coveted runners-up spot.

But assistant coach Butcher insisted: "Our toughest opposition is ourselves because, if we're not in the right frame of mind for any match, then we can struggle.

"Lessons have been learned from Macedonia, particularly in the first half, and they were learned in Iceland as well.

"It's a home match and we want to win our home games. We want to give it all that we can on Saturday.

"Norway should have beaten Iceland when they drew 2-2, they had plenty of opportunities, dominated possession and Iceland didn't have many attacks on goal and yet scored two goals.

"So there is hope for us but they are a good side. They are a big, strong side. But it's up to ourselves and how we approach the game.

"If we really want to win on Saturday, then I think we can do.

"We all know what we can do but it's about having the bravery and the bottle to go out on that pitch and do it."

Burley was the target of criticism following the reverse in Macedonia before demonstrating his strength of character with a brave approach to the Iceland game, which paid off with a win.

The Scotland boss is now likely to find himself under pressure once again as he prepares for his first competitive home game in front of a sold-out Hampden.

Butcher said: "Everybody is excited and we have to make the players believe they can win the game and go out there and perform to the best of their abilities within the framework of the team.

"It's about confidence. We are still at an early stage but the players have played a double-header, they know what it's all about, and hopefully after Saturday we will be in a good, strong position.

"It's up the staff and the players, in the few days that we have together, to make sure we are mentally right for the game and make sure we approach it properly.

"The players will be physically fit, that's not a problem.

"Mentally, it's about 'This is our kingdom, this is our place, and teams should come here and fear us' - hopefully they will do on Saturday."

With Barry Ferguson still injured and stand-in captain Stephen McManus suspended for the visit of Norway, Burley has yet to decide who will shoulder the responsibility of leading out the team.

"We are obviously looking for a new captain because of big Mick's suspension," said Butcher.

"We will have a look throughout the week and there are options there for George.

"It will be nice if we don't have as many injuries and withdrawals as before and have a bigger squad to pick from.

"That's why he has picked a squad of 25."

Meanwhile, Butcher welcomed the prospect of Hamilton youngster James McCarthy defecting to Scotland.

The talented teenager has already been capped at under-21 level by the Republic of Ireland, for whom he qualifies because of his Donegal grandfather.

But reports today claim Scottish Football Association chiefs have held initial talks with the club and player about him switching allegiance to the country of his birth.

"Scotland are interested in taking on board any quality player and he certainly is a quality player," said Butcher.

"He's had a great season so far and a great career so far, albeit a short one.

"We are looking at players who are probably more of a senior level, players like Kris Commons and James Morrison, who are established.

"But, if you can get ahead of the game and get players on board at an early stage, I'm all for that.

"Aiden McGeady was one that was missed before but hopefully McCarthy won't be.

"It's down to the player at the end of the day, he has the ultimate choice.

"It's nice when you have a lot of countries chasing you but hopefully he will turn out for Scotland and hopefully that will mean being part of a squad who is playing well, winning matches, and qualifying for tournaments."