1.This trick allows an account that is normally displayed on the Welcome screen to be hidden from view. To log on using the account, it is necessary to use the Log On To Windows dialog box similar to the one in Windows 2000 i.e. press CTRL+ALT+DEL twice.
2.Start-> Run-> Regedit
3.Go to: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\WindowsNT\CurrentVersion\Winlogon\SpecialAccou…nts\UserList
4.MODIFY/Create DWORD Value of Data type REG_DWORD Named [Type Name of Account to be Hidden]
Setting for Value Data: [0 = Account is Hidden / 1 = Enabled]
5.Exit Registry / Reboot
6.While the account is hidden on the Welcome screen, note that the account profile will be visible in C:\Documents and Settings or wherever user profiles are stored as well as in Local Users and GroupsSee more.
With this trick, you can create a hidden user account in windows 7 or Windows 8.
Posted by Shubham ;)