Hey Joe..I was checking out the fish screensaver..and the system requirements are PIII 866 Mhz...my pc is a PIII, but only 733 Mhz..would that be a problem. And maybe that's why I had problems with the one I have on here now..got to check the box/paperwork it came with. Jackie Click here: Ocean 3D Aquarium Screen Saver published by SelectSoft Publishing