I don’t often mention Windows stuff here, but I am obliged to use Windows XP for 6 to 8 hours per week on behalf of one of my clients. And I can say that the following tip from the TidBITS Talk Archive has transformed my experience. It makes using Windows so much more pleasant.
And amaze your Windows XP friends with LCD displays by enabling ClearType on their computers. It’s Windows’ best feature (superior to Apple’s nameless implementation), and it’s not turned on by default. Start -> Control Panel -> Display -> Appearance -> Effects -> method to smooth fonts (checked) -> ClearType. You can make it even better by visiting http://www.Microsoft.com/typography/ and running the ClearType Tuner utility.