If you're a developer, you need to check out VMware Workstation. This is an amazing product. It lets you develop and test applications running on Microsoft Windows, Linux or NetWare all on a single desktop.
It's very strange to see Windows Me boot in a window on your Windows XP desktop. You can run all of your debugging tools, too. At $189, the price is a steal. They do have a 30-day trial version if you want to kick the tires first.