contacts import & social network invite feature needed

We need a contacts import feature (similar to [login to view URL]) for our website that allows our users to send an invite to their contacts. We need this for the following emails and networks: - Hotmail (potentially incl. [login to view URL] & [login to view URL] - depends upon time needed) - Gmail - Yahoo - AOL - [login to view URL] - Outlook (Express & XP, 2003 & 2007) - MySpace - Facebook - Hi5 - Bebo - Badoo - Orkut - Friendster - Skype (depends upon time needed) For an overview of the expected functionality, please go to [login to view URL] or [login to view URL] and go through the signup process. As far as we know, there are existing solutions such as [login to view URL] or on [login to view URL], however, we want our own custom solution as we want to be able to add further further sites/services (e.g. Lycos, [login to view URL], [login to view URL], GMX, etc) upon request in the future. The plugin must be easily integratable into our MS SQL database (we're running CF 8).