McClaren's players head to Wembley knowing that they are just one victory away from the Premier League, and despite admitting that there is added excitement, he insists that there will be no change of approach for the game.
"I'm looking forward to it - we all are. We're a bit like the swan on the river - cool and calm on the surface but underneath paddling like hell," the former England manager told Sky Sports News.
"We've prepared as much as possible as normal. It's a big game and a different game but we've got to try and do things as normal. And this team do that. They're young and exuberant and enjoy training. They do the work, they work so hard, like they have all season.
"It's all in the preparation. You win games with what you do Monday to Friday, not necessarily on the Saturday. It's what you do to prepare."
Derby, who claimed third spot in the Championship, finished five points ahead of QPR this season.