Hey Durwin,
Be sure you read the network set-up instructions that come with the Apex very carefully. It will save you a lot of time as setting up the network for remote access does not lend to trial and error approach. If you've done some networking, the apex instructions will take you most of the way there. Follow the instructions for changing your user name and password on the Apex display first. Don't loose track of what you set up.
Once you have your connections set up and your router recognizes the Apex, you are half way there. Like the instructions tell you, once you've got your connection established, you should be able to type in http://apex and have the web based control panel come up on any computer screen connected to your network. It's likely that you may leave the linksys set up with dynamic IP rather than change it to static. What many of us have done is go to www.dyndns.org and establish a free account. It will point at your current internal IP address when you enter the URL youv'e established with dyndns.org on any remote computer. It's really the simplest way to be able to access your control panel from away from your immediate network.
Get it talking to your home host computer first and of course, any other computers on your home network all can access by http://apex. From outside your system, you'll need to type in the URL you set up with the dyndns.org and then enter your user name and password when it prompts you. See how far you get with that. It's really pretty doable. Let me know how yo do, best of luck and Happy Holidays! :santa: