I followed the guide to use GUIMiner -scrypt, and all of my settings are correct (I've checked them 10 times each I swear) - and the program saves my configuration settings, however when I hit "Start" the program changes to "Starting" and then just hangs there.
It doesn't freeze, it just never seems to connect.
I've installed the latest AMD drivers, and I've even re-installed Windows (It was that time, anyway) - No firewalls installed yet, not even an anti-virus yet. I'm still unable to connect, so I'm sure it's not Windows.
I was mining on my previous version of Windows behind the same router successfully, there are no log files being generated as far as I can see.