I'm afraid the only thing I can do is say
Welcome Aboard,
terry! Hope you find this place as friendly as I do!

And I assure you, if anyone has had any experience with that device, they'll be along to share it with you.
Now, you did a wonderful job of making the thread title very detailed ( so much better than some which simply say "HELP!"

). But perhaps you can add even more info in another post. For instance, is the Verizon USB720 actually the wifi device
and your DSL modem? I know there are people here who use non-Apple wireless routers, hopefully they can also help with this one. Is it actually a DSL wireless modem/router combination?