I read the very helpful tutorial here: http://www.howtoforge.com/centos_5.0_xen But one thing is still a bit confusing to me. I want to use a few VMs for web hosting and am wondering how domains/dns stuff would work with the VM. For example, I setup clientdomain.com in my named.conf and create a zone file, easy enough. If the client is running, say, Apache in their VM, is it good enough that they have it setup to use clientdomain.com and their domain registration info is setup for the host machine's DNS server? Secondly, what if they want to add more domains? They can't very well edit the host server's named and zone info. Can they simply run their own BIND and have it work as expected? I'm just a bit confused, as you can probably tell! Any help would be greatly appreciated. Thanks.