After a turbulent few months, Rooney made his first start since recovering from an ankle injury at Rangers on Wednesday, scoring the late penalty that sent United into the Champions League knockout phase with a game to spare.
The 25-year-old then apologised for the manner in which his contract negotiations were carried out, before finally declaring he never had any intention of joining Manchester City.
As United skipper, all Vidic cares about is winning matches, starting with Blackburn's visit to Old Trafford on Saturday.
Now the rows and wrangles are at an end, he feels Rooney should be allowed to concentrate on reaching the form he showed last term before injuries affected his performances.
"We have to forget what happened in the past," said Vidic.
"It is great news he has signed a new contract and will be part of Manchester United for the next few years.
"He showed on Wednesday that he is hungry to play for this club.
"He is hungry to score goals and had a few opportunities.
"It was important for his confidence that he got the penalty. He can build from that and the aim for him now is to achieve last season's form."