I'm using Beta 7k with XP Pro and an ATI 800XL with no problems at all. It runs fast and smooth even with all the fish selected. Although still in a beta version, this is the best sceensaver available of any kind.
I do have a question. Keep in mind I really enjoy "Marine Aquarium 3", but I am a dummy when it comes to knowing anything about salt-water creatures, plants and fish (OK, everything). So, what is the green "W" looking thing in the bottom of the tank?
Thanks