Also see this post
These are command line tools to copy and move files with the VMS versioning simulated. You may be able to set them as target for an Explorer context menu command. i think drag and drop hooking my require a DLL but perhaps not.
VMS file system when you saved a file in an editor that already exists, or copied a file over another the target was automatically renamed ;1 ;2 ;3 etc... These tools simulate that with changes to make them Windows compatible.