You need a screensaver creator programme. There are hundreds around, many are free but mostly only do slideshows. YOu need one that will use animated gifs, MOV or flash (not sure how you saved your file) and none of those are free. 2 good options for that type are AnimateIt or Active Media Eclipse or Active Media Storm. If you don't want to fork out for these programmes, IM me and if you can get your animation to me I can create the screensaver for you

Gill