I just had this problem myself, and solved it by adding
 
daysleeper.rivernet.rivermen.se   192.168.237.66
 
to my /etc/hosts file.
 
/Magnus
-----Ursprungligt meddelande-----
Från: mjreddy [mailto:mjreddy@ntlworld.com]
Skickat: den 23 juli 2001 23:34
Till: zope@zope.org
Ämne: [Zope] Help!

I am an absolute newbie and I have installed zope-2.3.1-win32-x86 on my computer with a cyrix 233mhz processor, 64 mb memory running win95. On running the start.bat, I get the following
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c:\Program Files\TestWeb>"c:\Program Files\TestWeb\bin\python.exe" "c:\Program Files\TestWeb\
z2.py" -D
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2001-07-23T20:13:50 PANIC(300) z2 Startup exception
Traceback (innermost last):
 File c:\Program Files\TestWeb\z2.py, line 623, in ?
 File c:\Program Files\TestWeb\ZServer\HTTPServer.py, line 391, in _init_
 File c:\Program Files\TestWeb\ZServer\medusa\http_server.py, line 550, in _init_
error: host not found
 
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my computer is named localhost.localdomain (I think!). I would be most grateful for any help.
 
cheers,
Mohan