KENNY Jackett says reaching the quarter-finals of the FA Cup is a "big achievement" for Millwall and hopes their win over Luton Town will inspire a return to league form.
The Lions overcame a potential banana skin at Kenilworth Road thanks to goals from James Henry, Rob Hulse and Dany N'Guessan to reach the last eight of the competition.
Jackett said: "As a manager, this is the furthest I have ever gone in this competition. I am looking forward to the draw and the quarter finals. For everybody at Millwall, it's exciting to be involved.
"It's a big achievement. Our form in the Championship hasn't been great and we needed to get back to winning ways. I'm very pleased to be in the last eight and we'll take the draw as it comes.
"We've got to turn around very quickly for Peterborough at The Den on Tuesday night and I hope this win breeds some confidence."
Jackett hailed the performance of winger Henry, who broke the deadlock in the 12th minute before crossing for Hulse to add a second goal to kill-off the non-league side.
"James is on good form for us and he is having a very good spell this season," Jackett said. "Playing on the left side gave him some options and a bit of freedom to join in with the forwards.
"He's been a very creative and consistent player for us this year. We needed some quality when we did break and we had that. Scoring the first goal was really important in us winning."
The Millwall boss was equally pleased to see Hulse score his first goal for the club. He said: "It is very important for a centre forward going to a new club that they score for their confidence.
"In the short time and two-and-a-half games he has played for us he has brought experience and good hold-up play and had chances. That’s a big thing.
"Generally, I think centre forwards who create chances do end up scoring. If you go two-and-a-half games and don’t have a chance, that’s going to be tough.
“I’m very pleased for him because as well as his goal today he has brought a lot to our frontline and an experience to our frontline that at times this season we've lacked."