Want the Vista/7 sidebar for your xp? well then google desktop sidebar is the best for you!

This sidebar is just a perfect solution for your xp it contains many gadgets with many features. You can also keep your Google Gadgets organized in your sidebar, a vertical bar on your desktop which basically functions as a control panel for your gadget. You can drag and drop any of your gadgets into or out of your sidebar, or move them up or down to arrange them in any order. The sidebar can be set to always stay on top of other screens, and it is designed it to blend better into your desktop.

*this information is taken from google.

 http://www.desktop.google.co.il/index.html