Hey, 
You could give  UDF a try  
; #FUNCTION# ====================================================================================================================
; Name...........: _SetObjectOwner
; Description ...: Sets the owner of an object.
; Syntax.........:  _SetObjectOwner($oName, $_SE_OBJECT_TYPE, $AccountName)
; Parameters ....:  $oName   - The name or handle to the object. This can be a path to a file or folder, a registry key,
;                    + a service name, a process handle, etc. See the comments on the _SE_OBJECT_TYPE enum for more info.
;                    $_SE_OBJECT_TYPE (Optional) - The type of the object to set permissions. This must be one of the values of the
;                    +_SE_OBJECT_TYPE enum. The default is $SE_FILE_OBJECT (a file or folder).
;                    $AccountName (Optional) - The account name or SID string to set. the default is the administrators group.
;                        +Can be any user name or SID string, see GetSidStruct() for more info.
; Return values .: Success      - 1
;                  Failure      - 0 and sets @error
; Author ........: FredAI
; Modified.......:
; Remarks .......:
; Related .......: _GetSidStruct
; Link ..........:
; Example .......: _SetObjectOwner('C:\Example.txt')