I understand that you have issues to setup Internet Viewing because you have two routers. Have a look at this link that will help you to setup both devices:
Hope this helps.
Thanks for the pointer but if you read my entire question you'd see that I'd already tried that & it still won't work.
It is possible that the issue is that the ActionTec router that FIOS supplies has some internal setting (not user accessable) that are preventing the Slingbog from connecting (it's not a stock firmware router) but in any case it won't work on my system.
It seems to be a great product but I'm betting that the issue is with the non-standard firmware on the FIOS router preventing the appropriate port forwarding.
In that case, I recommend you to verify that both of your routers firmware versions are up to date. Once you accomplish this task, make sure to provide the specific make and model for both routers. This way, we will be able to provide you with some third-party links that will allow you to get the step-by-step instructions to follow in order to know how to set up your Slingbox for Internet Viewing.