[Zope] How do I specify an ftp port in emacs?

All, I've used vi since 1985, and I'm just now trying out emacs. I found out how to edit a file over ftp, but the syntax doesn't seem to allow a port specification. How do I do this? Yes, this sounds more appropriate for an emacs newsgroup, but I need an answer as soon as possible, and I've heard Zope folks talk about using emacs to edit their sites. Thanks, Jim