I just wanted to add to what ringbearer said earlier. You can set up a scene at the size you want and save it with the name default and put it in your Bryce folder and it will open that file when Bryce is launched. You can also put a sky, objects or whatever into that scene and those will be opened also. Just wanted to let everyone know this because I just found out about it no too long ago. It saves time if you have favorite settings that you use most of the time, so you dont have to manually set it up everytime.