ScreenSwish

(the download will begin shortly. If the download does not start, try this direct link.)
 

ScreenSwish is an easy to use and powerful tool that helps you convert a Flash movie into a Screensaver -- an installable flash screensaver. You can make flash screensaver direct from your Flash .SWF files, or from your Flash executable(.exe) files. ScreenSwish allows you customize preview, settings and installation window to give you maximum promotion and brand visibility.