1. Make sure every player uses a different key.

2. Bypass the account authentication:
You have to edit the local "Hosts" file.
It is located here: C:\Windows\System32\drivers\etc (Win 7 32bits)
The file is supposed to be without any extensions.
You might have to run the explorer as administrator to be allowed to open and change the hosts file.
- make a backup copy
- open the "hosts" file with notepad
- add these two lines:

127.0.0.1 nwmaster.bioware.com
127.0.0.1 nwnauth.kr.infogrames.com

- the lines must look exactly as above. No character can be before 127.0.0.1
- press Ctrl+S in notepad to save the file
- check that there's only a "hosts" file and no "hosts.txt" (in case, delete the "hosts" and rename the "hosts.txt" to "hosts")

3. To host the server you need to host it in game (The dedicated server application isn't working properly).
Ports to open on the server's host:
- 5120 through 5300 (Depends on how many players will play on your server. One port per player.)
- 6500
- 27900
- 28900