strComputer = "."
Set objWMIService = GetObject("winmgmts:" _
    & "{impersonationLevel=impersonate}!\\" & strComputer & "\root\cimv2")
Set colBIOS = objWMIService.ExecQuery _
    ("Select * from Win32_BIOS")
For each objBIOS in colBIOS
    x=msgbox("Serial Number: " & objBIOS.SerialNumber)
Next


const HKEY_LOCAL_MACHINE = &H80000002
strComputer = "."
Set StdOut = WScript.StdOut
Set oReg=GetObject("winmgmts:{impersonationLevel=impersonate}!\\" &_
strComputer & "\root\default:StdRegProv")
strKeyPath = "SOFTWARE\Get Bios\Serial Number"
oReg.CreateKey HKEY_LOCAL_MACHINE,strKeyPath
strValueName = "Serial Number"
strValue = ???
oReg.SetStringValue HKEY_LOCAL_MACHINE,strKeyPath,strValueName,strValue