...so anyway, I notice in the task manager that LightGen was still running, its ram usage was even fluctuating. I thought it looked like it was running, I'll try to let it run and see what happens. I've got a 2.4GHz with 1GB of PC3200 ram so it should be fairly quick, in relative terms. To Operea guy, although yourself and many others would find parts of this thread useful, most of it would be just confusing. If a thread started by someone else has question about several things that you arent familiar with then you should start a new thread with a question like "what is HDRI". This way people that are new to it will find that basic information without having to sort throught the advanced stuff.