Connecting to ArenaNet

I just bought the game today and when i try to install it it goes to the connecting to ArenaNet page and the bar stops towards the end. I tried installing it on my other computer (which has the router and modem near it) and it finishes connecting. I disabled all firewalls that i can, including nortan personal firewall, ran ad-aware to get rid of any spyware but i still can't connect. What should i do?