I have exactly the same problem on a Windows 2000 server. I'm presuming my permissions aren't set correctly (I tried following the instructions in the word doc for that but it said to configure the permission for a user called Internet Guest Account and I don't have one of those, just an Everyone listed) or it's something to do with Perl. Can I just say that I really hate Perl.
I'd put in a trouble ticket but I don't like the general, we'll charge you money after note. So I guess I'll just have to fiddle with it myself.