When I right click on my desktop, and look up the list of available screensavers, I do not see my files there and I can't select my level as screensaver.
You need to install the screensaver by Right-Cick and click "Install".
Also, when I double click on screensaver.scr, I get an error message saying that it's missing a .dll file.
What's the name of the DLL?