The ef2saver.zip file you have requested: Media / Others / EF2 Screensaver - 3.03mb is not available. Perhaps try browsing all files for the game Star Trek: Elite Force II and upload any files you want to share or are missing. This is the only information we could locate:
This screensaver by FileTrekker shows six screenshots from EF2. Some of the transitions are a bit slow, but you get to enjoy it longer that way I guess. I'm running 1280x1024 and the image quality is fairly good.EDIT: That's not my desktop in the screenshot.