Error in Windows Live Messenger in Vista Home Premium

When I try to log in at Live Messenger I get error code 81000306, they say it has to do with my internet connection, but it's perfect!
Somebody got help?

go to DOS prompt and type 'format C:'. Then get a real OS. Or reinstall messenger.

It was automaticly installed on my pc, and I can't find my XP Pro CD x.x

You can try using another application like Trillian or something. I sometimes get that error, but restarting Live Messenger fixes it.

NEVER MIND! Made it running with some script on command propt
It had to do with Window auto-tuning