Ok, so I just put the IP address in the "Value:" field? Sorry, yeah that's easy if that's it. Thanks!
Well, I guess what I was mostly referring to was how to set it to do virtual domains, so I don't have all my domains sharing a single directory structure. But there are other issues such as, such as that a cgi runs as the user rather than as "nobody" as it does on my default apache install. And probably a ton of minor settings that you could put in your httpd.conf to make things similar.
Is there a web page / wiki thing where they document all the important things about dreamhost's configuration that are different from that of a typical/default apache installation?