I have been trying to delete contacts from my Windows Live.

I have a lot of contacts under  All contacts (638). At the top of the list is Ipad 3 - next to this is a mobile phone number 07412 641088 which I do not recognize.

Also above the list is "3 Ipad" and in brackets below (Offline).

The majority of the contacts don't exist any longer or need updating.

Is there anyway I can get rid of them?