Hi greenhillmaniac,
A few years ago (February of 2011, so a few months before the windows v4 site shutdown) I retrieved Windows ME updates in order to install them on a machine that had no internet connection. On the other day I stumbled across these while looking for a file, so if any tuga is interested in this, here they are in their PT-PT glory:
http://www.mediafire.com/folder/n4cqwuen0b68b/winmillennium-updates
Cheers