You give us a little more information?
Are you connected to the Internet? Do you run a firewall? Have you entered the correct servername or IP address?
If this is your first time logging in, it may take a long time to load. Fortunately, this is a one-time-only thing. However, I think your problem is related to your connection setup.
Try running the Updater, turning off any firewall you may be using and typing 203.81.47.74 in the Server field.
Hope this helps, post back if you still encounter the same error or if you receive any new ones/when they happen.