Manager Gary Speed says Wales can halt England's Euro 2012 qualifying charge at Wembley on Tuesday.
A win will put Fabio Capello's team within touching distance of securing top spot in Group G and qualification.
But Speed takes his Wales side to Wembley with "no fear" and greater belief after victory over Montenegro.
"England are by far the best team in the group and they will qualify comfortably but hopefully for our sake it won't be on Tuesday night," he said.
"We did them a favour on Friday but we're thinking about ourselves and getting a result purely for ourselves."
Wales' unexpected 2-1 win at Cardiff City Stadium, which followed shortly after England's 3-0 win in Bulgaria, means Capello needs four points from the remaining two games to qualify for the Euro 2012 finals in Ukraine and Poland.
Speed, meanwhile, finds himself at the opposite end of the table after goals from Steve Morison and Aaron Ramsey gave Wales their first points of the campaign against Montenegro.
However Wales perform, they are already out of contention for Euro 2012.
But the inexperienced manager, who had lost four of his five games in charge before facing second-placed Montenegro, says the performance yielded much more than just three points - Gareth Bale's form prompting Capello to admit that England will need a special plan to deal with the Tottenham winger.
"The result has given the players belief that we are going in the right direction," said Speed, who will be without the suspended Craig Bellamy and David Vaughan but Jack Collison is back after illness.
"Hopefully we can take confidence from that and put in another good performance against England."
Speed's first competitive match in charge was the reverse fixture in March when England cantered to a 2-0 win at the Millennium Stadium in Cardiff.
Speed felt Wales made the mistake of "playing too deep" in March and will not be repeated at Wembley - where England have gone four games without a win.
"We've looked at games obviously that England have played at home and how the opposition have set up and we'll take that into account," added Speed.
"But we've got to look at our players and what suits our players best. We're still developing.
"Although we want to get a result and win, I don't think you can compromise too much by the way England play or the way we set up."
And captain Aaron Ramsey added: "This is what every young boy dreams about and to captain my country in this situation is going to be a big honour for me.
"It's a derby game and everyone's looking forward to it. We have to control our emotions a bit."