I want to create a WebDAV site. Kind of like an FTP site, but using
WebDAV.

It will be accessed by PCs by using MS's WebFolders support (out of IE
and Office XP). It will also be accessed by Macs OS9 machines running
Goliath. It is for exchange word and excel files.

I got Go Live just to have the WebDAV server for our OSX server. 

I looked into the manual, but it just talks about creating a special
site that has versioneering and locking, and such.

I assume that this special site is only accessed with Adobe
products???

I also want to same site to be available via FTP and plain old HTTP
(like when doing directory browsing of an ftp site with a web
browser).

How do I do this? Is it true that the only way I can use all the cool
extra features (like versioneering and locking) is by having GoLive on
the client machines?