Hi, I have a Western Digital My Book World Edition external Harddrive. It is a Network Drive, this drive: http://support.wdc.com/product/download.asp?groupid=106&sid=76&lang=en I have been using it for 2 years now networked with a few imacs. I no longer have the software disk that comes with it. It has no username and password set to it but I would like to set a password on it now as I have moved into a bigger office with more people. My question is how can I set a password to access the drive, considering I no longer have the software CD and am using an imac? Thanks for your help.