I must say that I am very impressed with the features of dnsmasq.
I absolutely agree.
***HOWEVER***, the "ipconfig /registerdns" command does NOT seem to work
Microsoft has made proprietary extensions so that the members of an active directory domain can register in DNS in a secure way. The point is that no unauthorized computer should be able to pretend being a domain controller or another server. As far as I know, only Microsoft's own DNS-server (part of Windows Server) implements these extensions. So without a Microsoft DNS-server, I would suggest that all your servers are registered by hand in the DNS. Of course, if you 100% trust every machine on your LAN, that should not be an issue. Anyway, you can of course use Dnsmasq to register the machines as they acquire an IP by DHCP, but I guess you already know that. Rune