If you've always had a burning desire to ask Paul McCartney a question, now's your chance. The music legend and British national treasure will be taking part in his first ever webchat at 5pm this evening (May 20th).

Sir Paul will be chatting live from his studio in Sussex for 20 minutes. As well as answering questions from fans online, the former Beatle will also be announcing the winner of his exclusive website competition to win a trip to his concert in Mexico on May 28th.

After two huge shows in Mexico next week, Macca will be embarking on his all new 'Up and Coming' tour, which includes a date at Dublin's RDS on June 12th.

Paul will be answering questions at www.ustream.tv/paulmccartney between 5pm and 5.20pm.