It is a cool program and easy to use but it does tap your system. I have a P111 733EB with 256mb on the ram and a 32mb Nvidia GeForce video. Carrara never performed this sluggish until you start popping in trees. The more trees the more of a drain on the system. Here are just 2 of the many trees that are found in tree druid. This is really the first time playing with it(and no I don`t mean with myself :-) . Dave