with the original piece of code published, you have to be connected on the workstation with a domain account
that has admin right on the remote computer.

if you want to execute wmi command with a local account of the remote computer, you must add lines in the script to connect first to the remote wmi system.

A good example is given at "Problem with semisyncronous WMI query" in KiXtart bulletinboard.

There is a block like
Code:
  if $username and $computer<>'.'
    ; create locator object for connection to a remote computer
    $objLocator = CreateObject('WbemScripting.SWbemLocator')
    if @ERROR
      exit @ERROR
    endif
    ; create a (credentialed, if username/password provided) connection to a remote computer
    $objWBEM=$objLocator.ConnectServer($computer,$namespace,$username,$password)
    if @ERROR
      exit @ERROR
    endif
    ; set the impersonation level
    $objWBEM.Security_.ImpersonationLevel = 3
    if @ERROR
      exit @ERROR
    endif
endif


first, you create an object for WbemLocator
second, you connect to the remote computer (and here, you can use a local account of the remote computer)
third, you set impersonation level.

this is more complex than using
Code:
$Service = GetObject("winmgmts:\\+$sComputer+\root\cimv2")
_________________________
Christophe