The screensaver is set to put up its screens stretched to fit the user screen. Because of this, some may appear somewhat distorted, if your resolution is not the same aspect ratio as the original shot. Hopefully this will not be a serious issue.
To make it play, just put the OoliteShow.scr file in your Windows\System32 folder and select it from the Display Properties dialog, Screensaver tab.
I hope you will enjoy the show. Link to download is
Edit: New version 1.3, with latest screenshots including the upcoming v1.73 ones, featuring Griff's normalmapped ships (1.2 of the screensaver met the fate of the Cobra MkII: Never went past prototype stage

http://www.box.net/shared/ocm8smbrjx