In Windows NT 4.0, I used the Send To PowerToy, to add a right click in Windows Explorer, that would send the fully qualified file name to the clipboard. This PowerToy does not work in Windows 2000.
ClipName is a freeware shell extension that adds a Copy Name to Windows Explorer, and it works in Windows 2000, Windows NT, and W9x. I quote the readme:
ClipName - A free Shell Extension from MainSoft ----------------------------------------------- version 1.1 Very often, you want to pass the full pathname of a file as a parameter to another program and you have to type it entirely (the Copy command in the context menu copy the file itself, not its name). How frustrating! The file is appearing in the right pane of Explorer and you can't copy its name to the clipboard. ClipName is a shell extension for Windows 95 and NT 4.0 allowing to copy the name of a file to the clipboard. Just right-click the file in the Explorer and select the "Copy Name To Clipboard" command. ClipName will also be very useful for passing a filename as a parameter to our ExecParm utility (see WEB site mentioned below). ExecParm allows you to right-click the name of a program file in the Explorer and to pass command line parameters to this program. This new version allows to copy multiple filenames. If you select multiple filenames, you'll be able to create a list of space separated filenames on a single line or to create a list containing one filename per line. Folder names are also supported. It is recommended to uninstall the older version before installing this new one.