We talked a long time ago about the "best "tool to customize your Winodws 7 desktop : Rainmeter.
In addition to Rainmeter it is 100% recommended to have a look at this OMNIMO 5.0 tool
—WHAT IS OMNIMO———————————————————————————————
It’s a Windows Phone 7 inspired multifunctional interactive desktop information center based on rainmeter. This suite will turn your desktop into a productive and attractive workarea , delivering only the information you need. Every interactive tile gives you information at a glance, and can be easily customized to your needs. Unlike the initial Metro design, Omnimo gives you limitless customization potential, you can customize just about every aspect of it!
Say thank you to the author =fediaFedia (and the other contributors)
Download link + complete installation guide + all information are on the author's website.
This tool comes under a Creative Commons Attribution-Noncommercial-No Derivative Works 3.0 License.