well, I simply write it for you:
code:
$nul=writevalue("HKEY_LOCAL_MACHINE\Software\Microsoft\Windows NT\Current Version\Winlogon","LegalNoticeCaption","LEGAL NOTICE","REG_SZ")
$nul=writevalue("HKEY_LOCAL_MACHINE\Software\Microsoft\Windows NT\Current Version\Winlogon","LegalNoticeText","Authorized Access Only","REG_SZ")

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