Open Directory questions

Hi there... I am looking to set up a Snow Leopard server with Open Directory and the full shabang, so to speak. I have a design situation that I think is actually fairly typical but there doesn't seem to be much in the way of answers. I am putting the SL server on a private class C network behind an Airport network, using the Airport router to drive the connectivity and supply DHCP, including the LDAP server. I intend to put the SL server on the internal network. I have DNS and websites hosted through Dreamhost. I would like to set up the server to use Open Directory under the name of the DNS (i.e. dc=something,dc=com), but the website and DNS for the same namespace is hosted through Dreamhost. I figured that's fine, I can just set up a private DNS on the SL server and manually put in the records for the internal clients, then add a record in the public Dreamhost DNS for the public IP of the server. Is this a common setup? When I tried to install a server with Open Directory (I have a seed account), I discovered that when setting up the server, I'm missing a step or am confused by some of the questions. I would like the server's name to be "ramona". Therefore, the public Internet name of the server would be ramona.something.com. How would I set up Open Directory for this situation? It seems like whenever I used the general setup, it would create "dc=ramona,dc=something,dc=com" instead of "dc=something,dc=com" with a computer record for the server. This is common in AD setups (which I'm familiar with). But I'm trying to put my Microsoft past aside and focus all of my skills on the Mac world. Any help or guidance would be highly appreciated. --Verm