Arsene Wenger may have turned 60, but the desire to drive his young Arsenal side on to bigger and better things burns as fierce as ever.

The Gunners head to struggling West Ham on Sunday looking to extend a run of four successive Barclays Premier League victories. They are unbeaten in the last eight in all competitions.

Conceding a stoppage-time equaliser to AZ Alkmaar in the midweek Champions League game somewhat dampened the birthday spirit, but French coach Wenger remains fully focused on the task ahead.

"There is nothing to celebrate," insisted the Arsenal manager.

"On Thursday, I was at the AGM like everybody.

"We have to prepare for the West Ham game, and after we go to the next game.

"It is as simple as that.

"Who can predict how long you will be available in any job? Nobody knows.

"I want to give my energy to win the next game."

Wenger, who last won the Premier League title with his 'Invincibles' side of 2003/2004, added: "Am I happy with all that I have achieved? Certainly not.

"I expect always more and you can never be completely happy with what you do.

"I have helped to develop the club and gave some great moments of happiness to people who love football and to our fans as well.

"I have had a positive influence on the career of the players and have respected my duties of this club.

"The only credit that I give to myself is that I work very hard my whole career and always try to improve.

"You always think you could have achieved more and make better decisions."

The one, however, which Wenger made in allowing England defender Matthew Upson - who is set to face his old club at Upton Park - to leave six years ago still does not quite sit right with the Arsenal manager.

The centre-half, now 30, joined the Gunners from Luton during the summer of 1997 in a £2million deal.

However, although he did collect a championship winner's medal from 2001/2002, Upson eventually move away from Highbury, frustrated by a lack of regular first-team opportunities.

The defender has since become a regular in Fabio Capello's England squad and looks set to head to the World Cup next summer.

Wenger, though, is not surprised.

"I knew when he left that he will make a big career, but at that moment when Matthew was here, he was impatient," Wenger recalled.

"That I could understand as well because I bought him from Luton and after a few years he didn't play here.

"I didn't stop him [going] because I knew he had qualities to play in the Premiership, but he had players in front of him that stopped him."

Wenger insisted: "I knew he would make it.

"He had Premiership quality and had the potential to be international quality.

"He is there now because he is at the right age for a central defender and for a few years now he has not been stopped by injury which was his problem for a while."

Wenger revealed Upson was a player whom he had contemplated trying to bring back to Arsenal before he switched to Upton Park.

"Yes, he was always in my mind. Upson has good quality, good attitude, good spirit," said the Frenchman.

"But of course this is not the best moment to talk about that because he is a player at West Ham.

"Three, four, five years ago yes, but now he is settled and has a good career where he is."