strComputer = "." 
Set objWMIService = GetObject("winmgmts:" _ 
& "{impersonationLevel=impersonate}!\\" & strComputer & "\root\cimv2") 
Set colSMBIOS = objWMIService.ExecQuery _ 
("Select * from Win32_SystemEnclosure") 
For Each objSMBIOS in colSMBIOS 
Wscript.Echo "Serial Number: " & objSMBIOS.SerialNumber 
Next