The links work fine for me. The third one gives clear instructions re screensaver, the second one has lots of clickable links telling you how to do it.
The first clickable link in the list is 'A Quicker Scroll' - click on it for instructions.
2. In the search box click 'all files and folders'.
3. In the box that pops up, type *.scr then click search
4. A list of screensavers will appear in the box. You can preview them by double clicking on each one.
When you find the one you want, right click on the file - send to - desktop.
And that should be it. There will be an icon on your desktop that will immediately start the screensaver.