RE P3D: One problem with P3d is that it came without a manual. and it's buggy as heck. my major gripes with it are: 1)if you scale the model upwards you can't get it to scale back down. 2) the xyz axes to turn the model with the trackball are all screwed up. 3) And possably the most important - if you try to draw at the seam between front and back it messes up bigtime. (bloodsongs tut helps with this one but it's still frustrating.) Is it worth installing? depends: How patient are you? Do you want to run a program that acts like it was programmed by a six year old kid? How patient are you?