Unless your download speed is very bad why not get your textures
here or
http://www.mayang.com/textures/' class='bbc_url' title='Lien externe' rel='nofollow external'>here?
The textures from cgtextures are alot better than those on the blender CD and those from Mayang are a little better than the blender CD textures.
No matter if you get your textures from cgtextures, Mayang or the blender CD, in 90% or more of all cases you should not just use the texture as it is, but mix it with other textures or sharpen it, etc. This makes them work better for NWN models and it is important that the textures match each other properly.