Webdav on Win32 + osX client

[Palad1]

Hello,

I need to share parts of a windows drive on the internet, so I set an apache-powered webdav server up.

I can access my dav folder from any PC, but my pbook miserably fails to see the root folder.

For example:
finder -> command-k -> http://myserver:8080/dav -> enter my login/pass :
Error: can't acces device.

but
finder -> command-k -> http://myserver:8080/dav/ical/ -> enter my login/pass : OK!

Is there something I should know about webdav under osx?
the same thing works from a windows PC (using http://myserver:8080/dav as a web folder)

Bonus question:
Is there a way to use webdav over HTTPS with the finder?
Are there dav tools that can do it?

Thanks guys