Logons are the screens you see when you are logging on to Windows.
Changing them manually is a painfull process, but you can download Stardock's LogonStudio to make things a little easier: Stardock's LogonStudio(TM) is a free program that allows users to easily customize new logon screens for Windows XP.
I managed to create few sexy Logon Screens for you. Please feeel free to review and download them. If you have favorite wallpaper and want to transform it into Logon Screen inform me via the contact form. Meanwhile, enjoy those sexy looks spicing your desktop.