Shoutbox

Hello, every one
plz  i  need some help regarding my login problem that is:
when i try to login from my computer at home  to Windows live messenger 2009v
result:
pop up window tells me that i have firewall and proxy error and it gives me the following error number (81000306)

i tried to fix it with the following ways but it didn't work :(

1. i checked the firewall and  Windows live messenger was authorized.

2. i tried to uninstall it and install it again.

3. then i give up and formated my computer and changed My OS form XP to Windows 7
and even that.. it didn't work with me !!!!
i don't know what is the problem any more ????
plz Fix My MSN



Thank you