The Latics made it eight straight wins after claiming an impressive 3-1 victory at play-off rivals Ipswich.
Coming seven days after shocking Manchester City in the FA Cup quarter-finals, the victory lifted Wigan into the top-six.
But Rosler said: "The games are very busy at the minute but I am not thinking about the FA Cup, I am just thinking about selecting the right team, the right players and the right tactics.
"I am only dreaming about getting two points per game, which would get us into the play-offs and then we will deal with that. We have won eight games, and six have been away from home. I am very happy with everyone."
It was Ipswich who took a deserved lead in the 19th minute when Tommy Smith capped a bright opening with a neat shot past Ali Al-Habsi.
But the lead lasted little over two minutes as James McClean fired expertly under Dean Gerken after good work from Marc-Antoine Fortune.
Luke Hyam missed a golden chance to restore Ipswich's lead before Wigan centre-back Leon Barnett was gifted the whole of the home penalty area to guide Jordi Gomez's free-kick into the net in the 41st minute.
Ipswich had moments in the second half but did not look threatening, and the game was over when Gomez took advantage of a slip from Paul Green to feed Fortune whose low cross was turned in at the far post by McClean.
Rosler said: "You have to single out James McClean - it is very important our wide players start scoring goals. His first goal was unbelievable movement.
"I was pleased with the performance and the victory - everyone on the pitch got a seven out of 10."
After once again falling just short against the Championship's best, Ipswich boss Mick McCarthy was left to rue another case of his side wasting a lead.
Town have now lost 28 points from winning positions - the worst record in English football.
McCarthy said: "We played well and I was really pleased with the lads, but we didn't defend particularly well.
"It is not like us to defend like that from a free kick whereas the third goal was as plain as the nose on my face. Paul Green lost it and they were clinical enough to punish us.
"I am not going to be angry. People make mistakes but they are an honest bunch. It happens, you just hope the team you are playing against don't punish you and Wigan did."
And while their own play-off dream seems to be drifting away, McCarthy defiantly said: "We will keep scrapping to get into the top-six and who knows? It might be difficult, but it is not impossible."