Okay! RenderCow originally shipped with Mover 4. What it is, essentially, is the Vue4 rendering engine with no gui or control front end, and a networking interface instead. It was developed to speed up animation rendering for those who had access to a network of any sort. When you start to render an animation with Mover4 installed, at the lower left corner is a checkbox called 'Enable HyperVue'. What this does is turn the actual Vue4 program into a network manager; it does no rendering itself at this time. When you start the render, a new box pops up that should list the available RenderCows (you install them on every computer on your network, even the one that has Vue on it. You also need to turn off most or all AV and firewall software). You have a button to scan the network for RenderCows, but you can also add them by either the computer's name or network address. If that computer is successfully found, then it will be listed in the list box, with a checkbox to select it and an 'idle' message to the right of the name. When you actually start the render, the scene and textures are sent to each RenderCow, and they will begin to render one frame each, then pass it back to the Vue program and get the next available image to render. This is true hybrid networking, as it doesn't matter what computers are hung onto the network. My current setup has a 3 node rendergarden (not big enough for a farm, IMHO), with different motherboards, memory congfigurations (182megs PC-100 to 1 gig PC-2100), processors (from the orginial Athlon 700 to the XP2500+), and they get along just fine, albiet they complete a scene at different speeds (as an expample, One torture test scene I did just for kicks was going to take 70+ hours. With the 4 node Cow setup, it rendered in less than 14). Vue Pro changes the way they work just a bit. In Esprit Vue, only Mover benefits from the RenderCows. In Pro, you have the option of rendering only part of your scene, so an image can be broken up into sections, and a section assigned to a Pro Cow.