[Zope] How to use WebDAV?

I am trying to use WebDAV (so far under Win98). IE5/File/Open(check "Open as Web Folder") - "http://localhost:8080" So far so good. IE5 opens a folder with the Zope files and folders visible, and I can navigate through the folders. However it is not clear how to work with files. Right-clicking on a file gives potentially useful options to Open or Send To. Open simply renders the file as if served normally through Zope, Send To does nothing - I tried sending to a plain text editor (PFE), my favorite HTML editor (CoffeeCup) and NotePad. Nothing happens. What am I doing wrong? Thanks, Richard