WindowBlinds 

WindowBlinds allows you to change the style of title bars, buttons, the Start bar, toolbars and much more. Safely add thousands of new visual styles to Windows to change the look and feel of your computer.
skins skinning stardock themes desktop

LogonStudio 

Stardock LogonStudio allows Windows XP users to edit, change, and apply new logon screens. LogonStudio comes built with a visual editor to make it easy to create your own logons which can then be uploaded to websites to be used by others.
stardock logons skins themes desktops skinning

TuneUp WinStyler 

TuneUp WinStyler lets you change the way Windows looks on your computer. You can change the look of the complete desktop easily. The start menu, taskbar, even the panels and windows of all modern applications get a new look with the click of a button
skin visual style welcome screen icons themes