If you are in a web browser (Explorer or Netscape) or reading an email in Outlook Express, hold down your Ctrl key and spin the scroll wheel on your mouse (if you have one). It makes the text larger or smaller depending on which way you spin. For Opera users, it magnifies both the images and the text. This is a simple, but useful shortcut for people who have a hard time reading the small text on some websites. Plus, you can impress some novices with your skill.