There is a new script generator by Lilac Soul available for download at Neverwinter Vault. It makes creating scripts much easier and contains about 100 more options than the default script wizards.
There is also a huge library of custom content available at the Vault, including new tilesets, monsters, and placeables. And the expansion pack coming out in a few months.
Anyone who buys the game and only plays the included Single-Player campaign is not enjoying the game it was meant to be played. NWN is a multiplayer game/toolset.
If you still have the game and want to try it the way it should be played (IMO), go to NeverwinterConnections.com and sign up for a two-hour multiplayer game. It takes about 10 minutes to register, create a character, and join a game. The site now offers a mentoring program if new players would like help from a NWN/NWC veteran. You can also host your own games, if you have a broadband connection. Many people just download a game from the Vault that they'd like to play, schedule a game for 3-4 other players to join, and then play it as a small group (many of the modules at the Vault are completely scripted, and have no need for a DM!). There are great conversions of The Sunless Citadel and the Forge of Fury that are great for this purpose, or you can download one of the top-rated modules at the Vault that are quite excellent, like the Penultima series, Parthenon, LoneWolf, Spires of Ravenloft, or any of the 1,000+ options.