Strawberries and cream will still be part of Wimbledon this year, but it will be a very different-looking All England Club that stages the tournament.

Anyone watching the 2007 Championships is sure to spot two notable changes at the SW19 venue.

Most obvious will be the lack of a roof on Centre Court which is now almost unrecognisable from the arena in which Roger Federer and Amelie Mauresmo won last year's titles. It has been removed as part of a three-year development at the club which will see a retractable roof in place for 2009 so that play can continue even when it's raining.

Secondly the two show courts will now feature big screens for the first time as the much-talked-about Hawk-eye system finally arrives at the tournament.

Wimbledon chief executive Ian Ritchie said the changes would certainly make this year's tournament a different experience.

"Whether playing on it (Centre Court) or spectating, it's going to be extremely different.

"It's the only time in over 100 years there won't be a roof and it will make quite a big difference to the atmosphere and the ball itself."

Ritchie also welcomed the introduction of Hawk-eye, which judges exactly where a ball lands on the court.

He said: "It's been a balance of retaining traditional values and at the same time being at the frontline of technology and innovation.

"Anything to us that provides a greater certainty on line-calling has to be a good idea if the technology is there.

"There's also the audience participation aspect. Fans at other tournaments that used it enjoy watching Hawk-eye and found that it makes things more interesting."

Players will be allowed to make unlimited challenges until they have made three unsuccessful challenges in a set. If the set goes to a tie-break, each player is awarded an extra challenge.

Ritchie stressed the system, which has been in place at many other tournaments around the world since last year, had been rigorously tested.

"We tested it extensively. Initially we wondered if it would be different on a grasscourt with bumps.

"But we tested it on Centre Court and it turned out to be flatter than virtually any other court.

"We're very happy the technology works on a grasscourt as well."

Tour star Ivan Ljubicic said he was "very excited" about the system being introduced to the world's most famous tournament, and even though it has had its critics - most notably world number one Roger Federer - he says his colleagues are being won over.

He said: "At the beginning players were not really sure about it; now I think everybody is happy.

"Everybody is unhappy losing a match because of a bad call. At the moment it's only available on Centre Court and Court Number One but hopefully in the future it will be available on the outside courts as well.

"It's much safer for us and the fans. You can challenge the whole match and I think that's very, very good.

"I think you should always challenge when uncertain about a call because that settles your mind - if you're wrong, you're wrong."

Another technological innovation will appear behind the scenes at this year's tournament.

For the first time, every player will be given a DVD recording of their match by tournament partner IBM which they can use to analyse their performance or that of an oponent.

As well as the actual match footage - serachable by point or statistic - the 'virtual coach' DVD will also feature match stats such as serving details and return points won.

Dr Ann Quinn, the LTA's head of sports science, said the idea was a good one but had to be used properly.

"It will be down to the coach to be picking out the most relevant thing. You can get lost in some statistics."

And Ljubicic said the product could be a "huge" success, bringing match analysis to a new level.

"It lets us know about our opponents and ourselves - it could make a really, really big impact on our sport."