You know, its amazing how BASIC the inner workings of the windows o/s can be.
The way the o/s offers you screensavers is if the filename has the extension .scr.
What’s even more amazing is it seems to launch from a dos/mode 8-character maximum archaic launcher.

The filename was Fake_screensaver.scr. The launcher launched it as its 8 character alias fake_s~1.scr. Isn’t that amazing??? Like somewhere down there is 8 character mode stuff.. right in winxp.
Maybe Raymond Chen would know