VistaTweaker is a free utility that allows users to customize and tweak various system performance, networking & user interface registry settings on Windows Vista.

Windows Vista Tweaker

Tweaks are organized into the following categories:

-System
-Windows User Interface
-Internet Explorer 7
-Software
-Network
-Performance
-Miscellaneous settings such as Owner information, logo, etc

For every tweak, a detailed description is provided along with checkboxes to apply tweaks in one go.

Download VistaTweaker v0.3 here