This is an online community forum. That means that it may be hours before anyone responds. Since it is community, that also means that it is customer to customer discussion/help. We don't work for Microsoft.
If you need to contact support -
How to reach support (FAQ) - http://social.microsoft.com/Forums/en-US/onecareinstallandactivate/thread/30400b52-7f26-4ba0-bc18-17e305329d90
Since your firewall isn't working, see if this helps:
Firewall repair tool - http://social.microsoft.com/forums/en-US/onecarefirewall/thread/e67b1989-afd5-47e5-a393-3a551c7c7e60/
-steve
Microsoft MVP Windows Live / Windows Live OneCare & Live Mesh Forum Moderator