[Zope] ExtFile Question

I need a little help getting started. I have Apache httpd-2.0.46 installed and I started the server however it is saying "Could not determine the server's fully qualified domain name, using .......for ServerName." I am hoping this is not going to be a problem. Anyway, when I am in Zope I selected ExtFile from the drop-down menu. In the Add ExtFile form I filled out an id, and uploaded a txt file in the file field. I get an error: Error Type: Can't create directory: Error Value: /opt/zope/doucet/static/reposit/f/X How do I get a file stored on the Apache server now? And how do I view it? Thanks, Laura