Just a bit confused on what you were saying. Do you have two separate DSL services/phone lines? Or just one DSL service?
If you only have one DSL account (with one ISP), in most cases, you can only use one DSL modem (I assume 2Wire 1701HG Gateway is your DSL modem) at a time. The simply thing for you do is simply use one DSL modem, and enable the wireless to cover the entire house.
Otherwise, get a long ethernet cable and wire across the corridors.
Ideally, you can use one router as a main wireless base station (connects to the phone line), and use another one to expand the wireless network. There are two ways to do so, one is known as Wireless Distribution System
where two wireless routers were linked wirelessly. Another method is known as roaming network
, you will need to use an ethernet cable to link them up.
Hope this helps.
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