Update an outlook contact Group in share point site

Hi ,

I got a requirement to update an outlook email group like 'OffshoreMembers' in sharepoint site(not sharepoint group) . Consider i have permission to  create group and add member in existing group using outlook.

Using outlook I can easily add any members to an outlook group :-

http://office.microsoft.com/en-in/outlook-help/create-and-edit-a-contact-group-formerly-distribution-lists-HA010354963.aspx

But I need  to add members to this outloook group from a share point site using any method like customization /services/custom web part/Integration ,, anything.

Please help me in achieving this ......