Sorry but for all 32 bit versions of windows the absolute limit to any program is 2 Meg, regardless of the amount of memory in the machine. Any program exceeding this limit will be unable to get more memory. So three options: - try it with a 64 bit version of windows, as far as I know there are no real experiences with this yet - render in layers, first render a background, put as a picture in the background and build it up this way - reduce requirements by using simpler models (reduced resolution) and/or smaller and less texture maps