Orio- My models were built in Autocad using plans from the architect and then imported into Vue. I'd have to second jc's advice as well, experimenting really is the best way and he's right, every scene is definately unique, depending on a lot of variables in the scene. But he's also brought up a good point that you and I are both very familiar with. Commercial work (or in this case architectural/visualization work) is very short on time, most of the time you're hanging on just trying to scramble to meet the deadline and you're usually pushing right till the last minute with stuff, so experimenting is not always possible, which is too bad because I'd love to go back and tweak some of my previous sims just because I know they could have turned out much better if I'd just had an extra day budgeted. Orio, I'll have to do some experimenting and see how IBL comes out on the model I've been testing with, thanks for the suggestion.