Doc, not sure if you need this, but I ran into the filter problem a while back. I searched and searched and finally stumbled across some sample code to help sort out the computers from the users. The snipet below is just creating an array if the Filter defined is "User" and then checks the "class" of the object to determine if it is a computer or user.

Code:

          if ucase($filter)="USER"
            If $OUObject.Class = "user" 
              $objects=$objects + ucase($OUObject.Name)
            endif
          endif