I just tried it, had no problems.
I brought up the NWN launcher, picked the DM Client. Told it to do a new internet game (or however that's phrased...)
I got the message about the server being down, the usual yadda-yadda wait.
Then I got to put up my server, and once all the server settings were set, had to pick a "character" to be a DM. It all worked fine, and I had all DM powers.
I may have gotten something backwards here, should have written it all down. Heh.
Where in this process did your train go off the rails?