Is it possible to retreive the computer name of any user on a network? I am writing a winpopup replacement using mailslots. The mailslots require the computer name, but I only want to have to type in the User ID to whom I want to send a message. ie I want to send a message to network user 'CRAD', but I need to know the name of the computer that 'CRAD' is currently logged in on.