Oh, I'm sorry; I should have clarified. I'm speaking of modding objects such as benches and fences. Things that don't require animation or (I think) rigging.
So again, UV mapping and getting the files into a usable .nif format are my only limitations.
I have tried acquainting myself with Blender on numerous occasions, but we don't seem to get along very well. SketchUp's way of doing things is much more natural to me.