I just took the quiz and got 5 for 5 (psst...it took me, like, 10 tries!). There are two tiny links to download the screensaver, one for Mac and one for Windows. Make sure you pick the one on the right. It works fine with Win2k and I'm sure it works with 98, as that's still the most popular. It doesn't handle a dual monitor setup, however...it only runs in one screen.
The .exe file is probably a self-expanding compressed file that automatically installs the .scr into your windows directory.
If anyone wants it without taking the test (chicken!), send me a private message.