How to use High-Speed Internet Gateway with Existing Router

T Mobile is horrible!! None of these options will work. They should call themselves "immobile. " This is so sad. You can't even watch one movie on one device in your home, much less work from home. I am going to the BBB because they lie to everyone about their service and it almost cost my husband his job. T-Immobile has really gone done. I have blogged them out hoping no one else experiences this. Please RUN from them!!  Stay only if you want to ride the net on a tricycle.