McCall joins Gordon Strachan's backroom staff as the new Scotland boss looks to turn around the team's fortunes following a poor start to the 2014 World Cup campaign. Scotland sit bottom of their group with two points from four games, a record that got Craig Levein the sack.
No-one outside of the Scotland set-up is giving them any chance of making Brazil and McCall made no bold predictions as he was unveiled at Hampden. But the Motherwell manager feels they have to be optimistic going into each game and see where it takes them.
And the former Bradford captain and manager was further convinced of the benefits of a positive approach when his beloved City reached the Capital One Cup final with a 4-3 aggregate win over Aston Villa.
"There is no doubt there is a good group of players there," said McCall, who will continue his Fir Park role. "If you talk about qualification, that's a way off. But we can only take each game at a time. We take the Estonia game and we have Wales here, which should be a full house, and you take it game by game.
"If someone had said Bradford were going to end up at Wembley... they took it game by game, managed to get a win at Watford, won at Wigan, they ended up beating Arsenal and then won over two legs against Villa. No-one in their wildest dreams could ever have thought that would have happened.
"Not for one second am I going to say 'we can do this and that' but what we have got to be, and I'm sure that will come from Gordon and Mark (McGhee), is confident in what we have got and the manager is that type of person to bring the best out of the players."
McCall will be able to pass on his experience of securing success with Scotland, having played every minute of the 1990 World Cup and the 1992 and 1996 European Championship finals.
"I was very, very lucky that I played in an era where we were qualifying for tournaments," the 48-year-old said. "I wasn't involved in the Italia 90 qualifiers. I actually made my debut against Argentina and we managed to beat them 1-0. They were the World Cup holders so naturally the Tartan Army thought we were World Cup heroes and could beat anyone.
"It's not rocket science, you just have to hopefully have all your best players available, get them into a system and have a little bit of luck. I thought Craig was unlucky with certain things. But it's a new slate and we have to move on and try to hit the ground running, firstly with the game against Estonia."