this is not a writer issue, but a Windows Live messenger thing...
researching a little bit, this is not possible since you still need to get a confiramtion from the users to get them included into your messenger...so I need to enter them manually one by one...this is a pain, but still is something you need to maintain
security.
Now. It would be a great help to allow users to import windows live messenger and include people that has you already as a friend without needing a confirmation.
thanks
Jorge A Reyes Zumarrga S