One thing I keep seeing that isn't correct: Poser will accept a model that is not UV mapped. I do it all the time. I also model in Wings, and have been doing so for almost 8 years now... The only difference in a non-UV mapped model and one that is UV mapped will be when you try to put materials and textures on your model. With a non-UV mapped model you will only be able to use procedural shaders.

The advice about using control edges and splitting your model into smaller chunks is good advice. Especially control edges. You can create a long thin rail if you use control edges.

If I had a nickle for ever time a woman told me to get lost, I could buy Manhattan.