Still, it wasn't quite what I was looking for, so I searched around a bit and found Hyborian Age 1: Temple of the Spider God -- now we're talking! It's a fan-made module that uses hacks to add new facial models, new Hyborian-ish equipment, and (my personal favorite touch) change the music to Basil Poledouris' Conan the Barbarian soundtrack. The plot is nothing special ... "barbarian/fighter/rogue rescues innocent virgins and battles spider god, film at 11." But the dialogue is a nice Conan-style pastiche, and the soundtrack adds a lot. It's not quite the ultimate in Howard-fan gaming, but it's certainly closer than running errands for a paladin chick accompanied by a snarky halfling.
It's not a very long module, alas, about four hours max; it was touted as being the first of three but that was in 2002 and numbers two and three never materialized so I rather doubt they're going to. If I was familiar with the NWN toolset and had time to burn on it, I might try my hand at retooling/finishing it myself.
Ah well. It was fun. :) I just wish Age of Conan wasn't a friggin' MMO.