I know my contact's phone can receive them, because other people using Live can send messages that she'll receive, but I cannot. When I open the SMS messaging window, it will not even allow me to type anything in! Upon hovering over the text box, the mouse does not change fromt he pointer to a text-insert cursor. I haven't been able to find this problem on google, so if anyone has any ideas... I'm open to them.

Key points:
I've tried

• redoing the contact number
  
• reinstalling Live Messenger
  
• remaking the contact entirely

Sorry if bumping isn't allowed...but I still am unable to get Computer -> SMS texting for this friend to work... once again, any helpwoould be appreciated.