[Zope] Deployment issue

Hi. I have a deployment issue. My application is at http://webpage:9673/dms. When I try to access this page from another PC (in LAN), it fails although the DNS is set properly. But after putting the IP address of the PC into the /etc/hosts file, it works!!! But putting evry users' IP address, hosts and domain information into the hosts file is not desirable at all. What should I do then? Thanks a lot, Paul Chung