system("//$Server/c\$/temp/ChPass.exe $Server");

You are putting the server name on the command line which the script would see in @ARGV but the script is trying to read (from STDIN?), so you want something more like: system("echo $Server | //$Server/c\$/temp/ChPass.exe"); just to give one example of a way to do it.

Note, however, that running "//$Server/..." just copies the script from that server and runs it on the local computer! To have the script actually run on a remote computer requires more than just file sharing. See Using WMI for create a remote Process on Win32 for one example of how to do that.

        - tye (but my friends call me "Tye")