Looks like their chatroom is down as well. Shawn didn't even inform his customers when exactly the servers in Texas would be down, he just said "soon" which isn't enough. Oh, wait, the entire CW is down!!!!!
You change your DNS with the register who holds your domain name. The register will give you the current nameservers your domain points to and an option to change them. Propagation takes between 24 to 72 hours. Of course this won't help if you bought your domain with Cyberwings.