Accessing asset store

I am using Unity 4.4 on Windows 7 machine and trying to access the Asset Store by going Windows->Asset Store from the main menu. I get a message that I am not connected to the internet which is not true. I am using a machine at work thus have to go through a firewall. Are there settings where I can tell Unity my username and password?

Solution including user/pass: http://forum.unity3d.com/threads/using-unity-when-behind-a-proxy.69896/