EnhanceMyVista is an easy to use yet advanced enhancing, optimizing and tweaking tool for Windows Vista. With a clean and simple interface it brings you an All-in-One set of powerful and neatly classified tools, settings and tweaks.
As a bonus there are some unique and uncommon options too. Being permanetly in development it is the best choice in it's category.
* Fixed some bugs
Tools and Utilities
Product page: here