Pocket Plane Group (http://www.pocketplane.net)

Icewind Dale 1 remained the last of the five original Infinity Engine games not to feature a lively, interactive party of NPCs. The release of Icewind Dale NPCs changes all that.

Team your hero of the frozen north with an eclectic band, thrown together by circumstance to face down the forces menacing the Dale.

IWD NPCs features five fully-realized joinable characters with all the depth you would expect from PPG companions, complete with original portraits, voice acting, inter-party and PC-focused dialogue, and romantic possibilities. Most characters can be customized with multiple class combinations.

Icewind Dale NPCs Homepage (http://www.pocketplane.net/iwdnpc)
IWD NPCs README (http://mods.pocketplane.net/kulyok/Readme-IWDNPC.txt)
IWD NPCs Forum (http://forums.pocketplane.net/index.php/board,89.0.html)

From the info in the readme & some of the threads at the iwd npc, this looks pretty good. The only complaint(if it is that) i have is the lack of the smaller races. All NPC's are human, elf or half-elf. The author explains his reasoning on the forum & it is a good answer so no biggie.