Warning: Ironically, this is an OpenOffice.org (OOo) Impress file,
and even though the presentation is about Microsoft® products,
you cannot view the original presentation file with a Microsoft® product.
You must (download &)
use OpenOffice.org for that.
PowerPoint format export (no guarantees it will work): WinKeys-01.ppt 72 KB
Notice how much larger this is.
If it doesn't work get OOo (OpenOffice.org, see above) & use the original format.