Iestyn Harris has urged his Bulls team-mates to make sure they don't miss the chance to write themselves into Wembley history.

The Bulls star was the last skipper to lift the Challenge Cup at the famous Twin Towers, having inspired Leeds to victory in 1999.

He is now intent on returning and savouring success at the new stadium, knowing Bradford must first conquer confident Huddersfield Giants in Sunday's televised quarter-final.

"Those memories stay with you forever," Harris admitted. "There was three of us here - myself, Terry Newton and Marcus St Hilaire - involved that day and we won't forget it.

"It would be great to win at the new Wembley as the first team back there but that chance only comes around once and we have to take it."

The knockout nature of the cup means it is all or nothing for the Bulls ahead of the Grattan Stadium encounter.

They start as favourites but Harris realises that means nothing and if they stumble they could be left ruing their mistakes for another 12 months.

"The only important thing about this weekend is winning and getting ourselves in the hat for those semis," he added.

"In Super League, if you don't perform you can put it right the following week. You don't get that luxury in the Challenge Cup, as Leeds found out with Wigan. They didn't perform and their chance has gone. We've got to make sure we don't make the same mistake."

Harris, 30, added: ""It's a massive game for us. We're at home, which is always a blessing, but it's not too long ago that Huddersfield got their first win against Bradford in Super League and there's certainly going to be some spice in this one.

"There's always some surprises in the Challenge Cup. We've got to make sure we're professional and don't become one of them.

"We must put aside the fact that it's Wembley in three games, forget all the history of the cup and the fact that it's live on the BBC and then just go out and do the job."

A fit Harris will be vital to Bradford's chances. He ignored a hamstring strain to play on and guide them to a victory in Perpignan last Saturday and is now nursing the injury ahead of the monster clash.

"I'm very optimistic," he revealed. "I've just got to manage it well and make sure I do the necessary things to get it right for 2.15 on Sunday."