>We're trying to administer our production ADSM V3 server. We have
COMMETHOD
>HTTP  and HTTPPORT 1580. When we connect to http://ourserver:1580, we get
>an authentification required dialog and, once authentificated, we get '404
>the requested URL was not found on this server'.

Check on your ADSM V3 server installation steps.  It looks like the runfile
step was missed.
Just need to halt the ADSM server and issue

   dsmserv runfile dsmserv.idl


David Bohm
ADSM server development
(520) 799-5082 T/L 321-5082
email - bohm AT us.ibm DOT com