Thanks to my friend Ramesh Kumar for this awesome freeware Tweak UI Utility for tweaking and optimizing Windows 7 & Windows Vista, 32-bit & 64-bit.The tweaker is a 345KB .exe file which does not require an install, but yet packs over 150 tweaks & settings.

Download and more information here:-

http://www.thewindowsclub.com/ultimate-windows-tweaker-v2-a-tweak-ui-for-windows-7-vista