Yeah, I'm not getting all of these IP questions...
1. Launch Game
2. Select MULTIPLAYER
3. Sign in with your Username/Pass, Click "SIGN IN"
4. Click DIRECT CONNECT
5. Type dasaria.dyndns-server.com
in the "Server IP Address" field, Click OK
I even made you a README: http://neverwinter.nexusmods.com/download/2726
There is no reason to use an IP or even know what an IP is, just use dasaria.dyndns-server.com
. You do not need to be a network engineer to join Dasaria. It's as easy as dasaria.dyndns-server.com