Powershells script to Re-name Local Guest & Administrator Account?

Question

Does anyone have a PowerShell script that will rename a local user account (Guest & Administrator)? I am looking for something along the lines of what i have below or something close enough.

function Set-NewUserName{
    param($OldUserName, $NewUserName)
    #Implement Black Magic to change username.
}

Answer 1

You can use WMI to do this.

$user = Get-WMIObject Win32_UserAccount -Filter "Name='$oldName'"
$result = $user.Rename($newName)

if ($result.ReturnValue -eq 0) {
return $user
# you may just print a message here
}