Harry Potter fans are going to get a chance to win a walk on part in the next instalment of the Harry Potter film franchise, Harry Potter and the Half-Blood Prince starring alongside Daniel Radcliffe and the rest of the huge cast.

An online competition that runs from today until December the 20th will whittle out the winner, and it's easy to enter, particularly if you're a fan.

Update: I now have the competition link...

However the immediate problem is that I can't find the competition itself, so if you do please let everyone else know.

According to Sky News, MSN are hosting the competition which will allow a fan to appear in the film. Now do be aware you won't be getting a major role, just a walk on part. Still, that's a superb prize to win if you're a fan.

Each week a new question will appear on the MSN site until December the 20th, after that the winner will be chosen and they'll be appearing in Harry Potter and the Half-Blood Prince. The questions will all be based on the JK Rowling novels.

Get entering, and come back and let us know where the link is!

Update: Well that was solved quickly thanks to Andy. Cheers for that Andy, here's the competition link.