So you imported a model into a scene. I'm not sure I'm getting the problem, here. You can't just grab it and delete it? I know it's been a while since my Lightwave days, but this is a simple task.
I stopped using Lightwave nearly 3 years ago, so yer testing my memory a bit. I tried to load up LW last night, but with all the modules and crap I have, it was taking forever so I just ditched it. No offense, but yer problem isn't big enough to constitute 4 hours of config and setup.