Snow Leopard server not delivering web sites

New snow leopard server will only deliver web pages from main web site. It will not deliver web pages from any of the realms that I set up from the main site. I have a number of xserve servers running tiger server and realms, but snow leopard server and setting up realms is not as easy for some odd reason, the realms will not deliver the web sites and I cannot determine why. When I try to browse to the realm, the browser will not find the index.html page or I get a permissions error.
Can anyone tell me why snow leopard is so difficult or so much different from tiger server?
Thanks
Don