You can change the logon background using a reg hack here: http://www.groovypost.com/howto/microsoft/change-the-windows-7-logon-background/
Or just use an app to do it. I've never used tweakslogon.exe however I have used this free app - http://download.cnet.com/Windows-7-Logon-Background-Changer/3000-2072_4-11112208.html
Either will do the trick.
answered Jun 10 '11 at 13:29
answered Jun 09 '11 at 22:35