to be able to use windows sharepoint services 3.0 on my windows server 2003 64bit edition i disabled the 32bit emulation mode of iis. by that i was able to install the 64bit version of sharepoint services 3.0.
my problem now is that all the web applications (and even the new sharepoint administration site) do not run any more.
when trying to access any page via browser it gives me the error "service not available" and the http error log says: "503 xxxx AppOffline xxxxxx"

any idea how to solve that problem and get iis running without 32bit emulation on a 64bit operating system?