I think this probably exists, but I haven't been able to find it.

I'm looking for a way, from a batch file, to create a PKZIP archive, or a directory, archiving all my source.

The trick is to have it be a different file/folder name each time, so that I can back up through the versions.

--
http://www.piclist.com hint: The PICList is archived three different
ways.  See http://www.piclist.com/#archives for details.