Ok Stewer, how how do you decide what your bucket size would be? I have tried timing the renders per frame using a stop watch, I have tried looking at PC memory usage during renders, and basically it still comes down to total guesswork, which is not the ideal situation to have. I have to render a 5 minute animated video at television broadcast quality by the 20th of November. My initial calculation of render times for my scenes gave me 2250 hours of rendering time. By experimenting with different settings I have brought that down to 1200 hours, which was still not acceptable, so now I am actually going out and buying a new motherboard, processor and another gig of RAM. If someone can find a way to tell me what my bucket size should be, rather than me taking wild guesses, I would appreciate it. If this script can do it, then I think it would be very useful.