Word 2003: Opening files on a network drive look like a URL

Hi All,
When I'm in Word 2003, and I go to open a word document on a file
server, it looks like it's opening the doc from a URL... it's hard to
explain without going through everything, here's the setup:

The file server is a Samba share, the file server also runs an apache
web server on it.

\\fileserver\share is mapped to my R: Drive.

The path is at R:\documents\document.doc (i.e.
\\fileserver\share\documents\document.doc)


When I go to open the file in word, I just go to File - Open, pick my
R drive, navigate to the documents folder and doubleclick on
document.doc.

I get an opening dialog box that says it's opening
http://fileserver/share/documents/document.doc

odd... why the URL?... well, what resolves is the home page that loads
off my web server, in word.

What's going on? If I copy the file off of that server and onto my
desktop it opens fine. I open and save files all the time in all
sorts of other applications off of that server, and Office 2000 never
had this problem. I'd appreciate any help you could offer.

Many thanks,
Aaron