Windows Live Messenger help!

Ok, So I bought my new laptop yesterday, everything was working fine! Woke up this morning signed on, absolutely fine. Went out (turned the laptop off..) and then i cant sign into msn, because of the firewalls, the firewalls are turned off.

I had this problem on my old laptop, and it fixed itself after 3-4months but i cant do without it for months because my computer wont let me upload things to the internet and im a keen webdesigner,

Wondering if anyone else has had this problem?

Edit: Sorted thanks anyway,
I dont know how i sorted it, i fiddled with the firewall. lol