Windows Vista Tweaking Utility
Ultimate Windows Tweaker is a freeware Tweak UI Utility for tweaking and optimizing Windows Vista, 32-bit & 64-bit. It can simply be downloaded and used as a portable application to customize your Windows Vista to meet your requirements. With judicious tweaking, It can make your system faster, more stable, and more secure with just a few mouse clicks. The tweaker detects whether you have IE 7 or IE 8 installed and accordingly offers you the relevant tweaks only. The best things of this utility that its only 380KB in size.
Windows Vista has lots of bells and whistles. With these come even more switches and handles. The good thing about it is that everyone can tweak the desktop to her or his liking. The downside for administrators is that the number of service desk calls by users who have configured their desktops so well that they are hardly usable anymore, is increasing with every newly deployed Vista machine. One way to solve this problem is disallow end-users to change their configuration. The other, friendlier, option is to be prepared when a desperate user who has messed up his desktop calls you.
The tweaks are classified under seven categories and can be accessed through a common interface, just like your Windows Vista Control Panel.
2) User Accounts & UAC,
3) System & Performance,
5) Internet Explorer (IE7 / IE8)
6) Network Optimization
7) Additional Options