The Baggies ensured their Wembley showdown with Derby on Monday, May 28, after beating their Black Country neighbours 4-2 on aggregate - following Sunday's 3-2 first-leg victory at Molineux.

Phillips' second-half strike was his 22nd goal of the season and Albion's 100th in all competitions during 2006-07.

"We're delighted, first of all, to have got through," the former Watford, Sunderland and Southampton striker told Sky Sports 1.

"We knew it would be an exceptionally tough game tonight and the first goal would be massive. Thankfully it's gone to us.

"I missed a header in the first half but I couldn't miss that, it was a great cross by (Robert) Koren.

"I'm delighted. I don't think there can be any grumbles (about the outcome) and anyone who says differently is watching two different games. I think we were the better team over the two legs."

Defender Paul Robinson is looking forward to the Wembley trip and a chance to erase the memory of last season's relegation from the Barclays Premiership.

He explained: "It will be a tough game, Derby have done an exceptional job. We know we've got another tough game coming but we're just delighted to get through to Wembley.

"Relegation is hard to take and you have to bounce back and we're doing that this year.

"Kevin has been fantastic all year, and he's proved vital in the play-offs."

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West Brom manager Tony Mowbray refused to celebrate his side's triumph, instead choosing to focus on the size of the task ahead at Wembley.

He added on Sky Sports 1: "The task when I came was to try to get in the Premiership and we still have a huge hurdle to overcome.

"It (tonight's win) means nothing to me, I have no feeling of joy in my stomach. We have to try and get the job done against a good Derby County side.

"It's the best day of your life if you can win at Wembley. That's the opportunity we have got and we have to prepare and we will be ready."

But Mowbray admitted he had felt the pressure until Phillips' header effectively sealed the tie in his side's favour.

"At 0-0 it's always a bit nervous," he added. "Things can change on a mistake, but we were in control for long spells tonight."

Wolves boss Mick McCarthy spoke of his pride after guiding his young side to the play-offs against the odds.

He told Sky Sports 1: "It's disappointing obviously, but we've not really performed as well as we could have tonight.

"We had our chance on Sunday when we were by far the better side for the majority of the game. That was our opportunity.

"They were better than us tonight and deserved to win the game.

"They are a good side, they have got good players and we knew that."

McCarthy was in charge of Sunderland when they were beaten on penalties by Crystal Palace in the same stage of the play-offs three years ago tomorrow.

He added: "I've nothing but pride for what the players have achieved and I've just told them that.

"They have done wonders for me, themselves and the club."