Where to go next? DNS questions? Default Website?

[NetDreamz]

ok, Im' new to linux, followed the how-to for Ubuntu Breezy, everything went fine. When I created websites, I created netdreamz.net first, as this is my domain. with www as the hostname. I then created dracosworld.com, and behrs1.com. friends of mine who have sites they want me to host. It would show netdreamz.net as my default site, however now it shows behrs1.com ad the default site. Any ideas?

All three of these domains have already been purchased, none of which are through godaddy. Can I make dns records on my server for these domains, would they propagate? What steps do I need to take to make sure that anyone who types in these domains is directed to my server.