The main thing is to have port forwarding on your router configured to pass traffic from the appropriate port to your Slingbox. For example, on the Slingbox 500 (and 350, I believe), the port is 5201. So, in your router configuration, assign a static ip address to your Slingbox and then configure port fowarding of port 5201 to your SB ip address. That should be it. You can verify the access by going to any web site that does port checking. On one of those sites, enter your current external ip address and port 5201. Here is an article on how to locate your port.