I don't know of any shareware screensavers. I usually save nice photos of guns and put them all in one directory. From MS XP, you can specify which directory you want the system to scroll through for the screen saver effect.
If you right click on the desktop, click PROPERTIES, then the SCREEN SAVERS tab and select MY PICTURES SLIDESHOW it selects it. You can configure it by clicking on the SETTINGS button, and select the directory you want to use and the rest of the options.
Just an idea...
esheato...