If you can get to our WEB site (I know it is probably obvious you can or you would not be able to post), but the game is not able to send the information to create the account, then something is blocking the games access to the Internet.
This must be resolved or you will not be able to login and play the game. If you have a router, there is a high probability it is blocking the game's access. In which case, you need to allow access through the router for ports 2000-5000 for both UDP and TCP, as Aces High II uses a random subset of ports in that range.