OK Tony I have had a look at your file as far as the scene it self go's I cant see anything to change that will make it faster, but on the rendering side with the options that you have it will not let me render it is saying I need at least 2g of memory I have 1g. The test render that I did to disk worked fine, I then setup my test scene with your render settings/mutlipass options and got the same memory message as above! If I remove the mutlipass options it will let me render and it will take approx 36hours acording to my machine with your setting but if you go into the Anti-Aliasing options and reduce the quality setting to 70% and the min to 9 and the max to 20 then this renduced the rendering to around 18 hours, I have heard that these settings give a good result over render times. As I cant do more without more memory Im not sure how you can improve things to get you going, maybe look at the multipass options, I see that you have all of them ticked maybe you could untick some of the ones that are not so important and it will work for you as well as others. I see that someone over at cgtalk has been doing some renders at your size so maybe they can give you more advice. Sorry I could not be more helpfull, I hope you get this sorted very soon, if I can of any more help I will try my best to help you. videodv.