the greatest free tools from microsoft; i think this one must be the best that microsoft ever released. it is the best for customizing windows XP
Windows XP is the great os as proven for 7 years for that long period of usage; many improvement, patched and many utility launched but i still think tweakui is the great tool.
tweakui and its pack power toy were a set of tool that combine mini-tools that including;
Color Control Panel Applet / SyncToy PowerToy / RAW Image Thumbnailer and Viewer / ClearType Tuner PowerToy / HTML Slide Show Wizard / Alt-Tab Replacement / Open Command Window Here / Tweak UI / Power Calculator / Image Resizer / CD Slide Show Generator / Virtual Desktop Manager / Taskbar Magnifier / Webcam Timershot
but for me tweakui is a must i will drill down for the use of tweakui in each area in the next blog.
you can load this tool from here