I suggest looking at my index to more screensaver information . The FAQ is unlikely to be updated in the near future - although technical details have changed, the general principles haven't. Most locations given in the FAQ are now broken. Errata The rtfm.mit.edu URL given in the introduction mistakenly capitalises macintosh. There are now a lot more Apple web sites to give.
Apple monitor FAQ details the trinitron lines.
Extensions Manager is now bundled with 7.5. I still prefer Batista's original interface. CPU Energy Saver Remove the 'MACH' resource, not the 'mach' resource, to get it to work on older Macs. This imposed limitation should have been rectified for the second 7.5 Update. It shipped with 7.6.