Jim,
I use WiFi from my home router to the Triumph-2 at a little more than 100 feet.
Hardware required - Triumph 2 and wireless router.
Depending on your service provider you may need a static ip address. Your IP addresses can change otherwise and when this happens you can't find the Triumph 2 on the Internet. Static IP keeps the address from changing. Having said that, I don't have a static ip and I've had the same ip address since September (and possibly before that). So it would seem my provider keeps the addresses fairly stable. As the saying goes YMMV. If your IP address is fairly stable, you can simply log onto the internet from a computer on your network and type "What's My IP" to make sure it hasn't changed. It's also a good idea to connect to your base with the rover before heading into the field to make sure everything is working properly.
I'll try to put something together that outlines the process. You'll need to be able to access your router and set up port forwarding in the router. There are also a few settings for the Triumph-2 that you will configure with NetView. It's somewhat involved, but once you go through it, it's done. Every time you power up the Triumph-2, it connects to the WiFi network automatically, making the investment in time worth the effort (in my opinion). And of course, you have an Internet reference station!