PC System Tweak for Windows
The PC System Tweak for Windows is the best utility for modifying system settings in the Microsoft Windows operating systems. "Tweaking" an operating system refers to modifying software, hardware, or other settings that affect how the operating system works. ... This manual will help you navigate PC System Tweak for Windows, understand how to search and apply Tweaks, download updates, and set PC System Tweak for Windows preferences. ... It will also provide you with information about PC System Tweak for Windows Warranties and Support as well as a list of the currently available Tweaks.
http://bulletproofsoft.com/download/bptw1201.exe - 5Mb - Download - Screenshot

System Optimizer And Tweaker
With System Optimizer And Tweaker you can control your Windows system ,It includes many powerful tweaks and hidden Registry settings. The simple user interface enables fast access to settings that affect the speed, security, efficiency, and convenience of your computer, System Tweaker And... Other tweaks may determine what programs are available in the Start Menu. ... Win Tweak Manager uses a Windows-XP interface to provide you access to over 300 Tweaks for the Microsoft Windows operating systems.
http://malwareremover.com/download/mrtw1200.exe - 7Mb - Download - Screenshot

WINner Tweak
WINner Tweak is a tools suite for tweaking, optimizing and tuning of Windows XP/2003/2000. It helps you increase performance and manage your system using various tweaks and utilities for settings including Windows, Hardware, Security, Network and Software. ... The import and export feature enables to create an export file, that contains specifically selected settings and tweaks. ... In addition to the tweaks, the program also offers several additional tools (Power Utilities) that include a Disk Cleaner, Registry Cleaner, Shortcut Cleaner, Uninstall manager, File Shredder, Start-up Manager,...
http://winnertweak.com/downloads/WINnerTweakSetup.exe - 2Mb - Download - Screenshot

Tweak O Matic
Take total control of your Windows system. Includes tons of powerful system and registry tweaks that let you experience Windows the way you want. You can boost your Internet download speeds up to 300% with the built-in Internet Accelerator, enhance and personalize the Windows interface, take... Iincludes tons of tweaks specifically designed for Windows XP, Windows 95, 98, Me, and 2000. ... This program is extremely easy to use, And if you aren't happy with a tweak you made, you can always roll back to previous settings.
ftp://ftp.cyberhq.com/tweakomatic/tweakomatic.exe - 792Kb - Download - Screenshot

Windows XP Tweaks
Windows XP Tweaks will make Windows XP more responsive and less irritating by performing the following system tweaks: * Loads the kernel (Windows XP system core) into physical memory instead of virtual memory - Note: Physical memory (RAM) is many times faster then virtual memory. ... * Forces Windows XP to use more physical memory * Disables the Indexing service - Improves Windows XP performance * Disables the Messenger service - Removes annoying messenger popup advertisements Windows XP Tweaks performs all the tweaks automatically when you install the program.
http://www.capehostpro.com/downloads/xptweaks.exe - 175Kb - Download - Screenshot

Tweak Genie
About Tweak Genie is the most powerful tweaking software for Windows with over 1000 essential and easy to perform tweaks! Introduction Tweak Genie will assist you to manipulate the hidden settings of windows according to your requirements. It gives you full control over these settings. ... Using an easy to use graphical user interface you can configure hundreds of Windows secret settings, such as Start Menu, Desktop, Windows Explorer, Internet Explorer, etc. ... Tweak Genie is a special utility designed to boost Windows performance and productivity.
http://www.hitdownloads.com/softwa...al/TweakGenie6.0.1FreeVersion.exe - 620Kb - Download - Screenshot

PC Security Tweaker
PC Security Tweaker is a security tweaking utility you can use to tweak Windows-based computers. It is compatible with all Windows versions and lets you control which users are allowed to access your PC and the level of access each user may have. You can choose to tweak access to lots of Control... Security tweaks can be applied universally or just to specific users. ... This software also lets you tweak Internet Explorer to secure web browsing. ... You can password-protect Windows and restrict users to running specific applications only.
http://www.pc-safety.com/download/securitytweaker.zip - 1Mb - Download - Screenshot

XPepius
XPepius is a tools suite for tweaking, optimizing, tuning and cleaning of Windows XP. It helps you increase performance and manage your system using 450+ tweaks and 5 utilities. In addition to the tweaks, the program also offers several tools (Utilities) that include a Start-Up Manager,... XPepius highlight features: - Various tweaks to System, Windows, Explorer, Start menu, Desktop, Files, Drives, Control Panel and more; - Tweaks to Enhance your security and privacy; - Tweaks for Internet Explorer, Windows Media Player and Microsoft Office; - Tool to edit registered application paths...
http://www.delphipages.com/uploads/utilities/xpepius_setup.exe - 750Kb - Download - Screenshot

XP Utilities Lite
Every day you have to perform various operations on your computer, modify and tweak you system for your convenience. If you're not quite satisfied with your Windows XP Professional or Windows XP Home Edition, if every now and then you feel the urge to tweak it a bit, then XP Utilities Lite is... At any time you can easily upgrade to Advanced XP Tweak, containing even more tweaks and features for the easiest and safest way of getting the most out of your PC. ... XP Utilities Lite is an easy and safe way to fine-tune your Windows XP and Internet Explorer.
http://www.tweakinternals.com/download/adutils.exe - 623Kb - Download - Screenshot

OptimizeXP Hardware Edition
Optimize and tweak your Windows XP Hardware settings to optimize your Windows XP environment. OptimizeXP comes with over 20 tweaks and optimizations. OptimizeXP comes with free on-line support. Don't forget to check out the other 3 editions of OptimizeXP!
http://www.econceptsoftware.com/downloads/OXP_hardware.exe - 703Kb - Download - Screenshot