GoZags

There are quite a few settings to something like this and the actual steps vary based on the gear you have. You are looking for a dynamic DNS service. A machine on your network will send a 'keep alive' signal sporadically to a service. The services are free most of the time. Linksys and other routers actually have a tab in the web interface/setup for putting in your dynamic address name and integrating the service in. This one is free: http://dyn.com/dns/dyndns-free/ At that point you would be getting a DNS name instead of a static IP, but it works the same. When you sign up you choose a name or get a random one given to you. On the router side you would need to setup a DMZ to one inside address (open it up, so to speak - the reference to DMZ is like that for the military term) that your DVR is on or, the safer way, just foward the ports needed to the address of your DVR. Now, in both cases you would need to have a static address. Generally routers hand out addresses from something like 192.168.0.100 to 192.168.0.254. You can 1 is the router (normally), but 2-99 are available but would never be handed out, so there would never be a conflict. Set you DVR's address to one of those addresses. This would be in the DHCP section on the router. Some routers, in the DHCP section might have 'reservations' where you can pull and address out of the range to be assigned manually. Good luck, it's pretty easy though - dynamic DNS is what you are looking for I have a feeling.