Neverwinter Nights is an amazing game, probably spent 1000 hours in it. Nice to see other people still playing this game too.

I think you must have missed something then because people I personally know and then some, have been playing all these types of games for years online without any problems See this link
http://forum.bioware.com/forum/44-legacy-games/

For Neverwinter Nights see this topic:
http://forum.bioware.com/topic/217876-nwn-community-server-status-and-info/

All are online, all have no problems, and all with no funny business. This community is exactly like the Gothic 3 community meaning since there was no more support (and what support that did exist at one time) was horrible, the community fixed the game making it far more stable.

Also all old games have official patches that remove the CD checks in them, this started a long time ago but you should already know that!