The download itself was called the Science Fiction Theme. It was an actual Microsoft WIN98 update. All the cursors pointers sounds etc were named sf_****.***. The screensaver itself was'scifi.scn' I have all these files but I am lacking the program that generated the math function that drove the screensaver. The desktop pic was a 'Martian desert' type of landscape with 4 horned spheres floating in the 'air' and the screensaver animated the horned spheres. There were actually only two, one always floating, and the other, which would multiply to three, followed the first one using a math function to generate the clones and the path. Neat as **** in it's day, something along the lines of Whitecap, but not music-responsive a search on .scn gives this: Common File Extension Variations: scn, SCN Author: Caligari Corporation Files with the SCN extension identify a scene file used in the TrueSpace 3D application. SCN files store animation, image and graphic data that is used 3D animation presentations. SCN files can be opened and edited using the TrueSpace application as well as other compatible animation software packages.SCN files support the creation of interactive 3D presentations that can be viewed and modified in the TrueSpace application. anyway fixing this is beyond me, I am looking for a quick fix, not a degree - if you know what I mean! I have looked a lot but guess I need the actual DL to get the tailored program to drive the animation. Appreciate you help and input! This is not mission-critical, just plain old nostalgia.. rick