XPertise, anyone?

Here's a site that will have a lot of relevance to anyone who has Windows XP as their operating system. Windows XP - The Elder Geek on Windows XP - Tips, Tweaks, Registry Edits for Home or Pro XP Users

The owner, Jim Foley, has put up a site that is full of helpful information written in delightfully clear style, with large numbers of appropriate links to information from Microsoft and others.

Don't wait until you're in trouble to read this one.