I just setup a remote computer with dyndns client and the host has been reporting correctly. I recently created a VPN connection on that computer to my home network and it kicks in at boot-time. Everything was working great!
However, I notice that the host/broadband DNS address for the remote computer is the same as my home network's. For some reason DynDns is picking that up when the remote computer is connected in to my home network via VPN.
Thanks for the assistance!