sigh... quoted from there site.

Quote Originally Posted by MaxDamage
If you cannot connect after we changed the servers, you need to refresh your DNS cache.

To do this in Windows XP:

* Click Start
* Click Run
* Type: ipconfig /flushdns
* Click OK
* Done


To do this in Windows Vista/7

* Click Start
* Click All Programs
* Click Accessories
* Click Run
* Type: ipconfig /flushdns
* Click OK
* Done


This should fix potential DNS errors.

If you still cannot connect, make sure you have the correct server address in your AlterIWNet.ini file, it should be Server=server.alteriw.net

Alternatively, you can replace server.alteriw.net with 109.237.208.88, which is the server's IP address. This will make the game connect directly to the address, instead of using a DNS resolver. Keep in mind, if you use this method, you will have to update the IP address once if move the server again.

If none of the above fixes your errors and the server is online, you should wait for a bit more for your Internet Service Provider can update their DNS cache.

Thanks.
your welcome