In almost every instance, when discussing "network rendering", one is limited to animation frame renders, the frames being divied up between machines by the net render server. Single image renders can only be done on the system doing the render. Someone above mentioned Bryce having an app that'll render an image on a network, but without clarification, this could still be limited to frame renders - let's see. Still, it would be better if the support were general and not app specific. Software support is a bugger, isn't it! Wish there was a way to wedge a driver or app between the OS and the application so that as the process instructions are sent to the CPU, they would be 'interactively' routed to and from a cluster - sort of like a packet system. Nothing like this on a Windows PC, unless you go the expensive Windows server route. I agree about the hardware limitations causing the bottom-line to be the best speed. Unlike most animation frame renders, calculations sent out to a cluster can be interdependent. Therefore, one machine (the fastest, let's say) can be waiting on data from another machine (the slowest), dragging the entire cluster speed down to the mercy of the slowest machine. BYS