Answers:
Yes, you want an RJ45 coupler close to the one on this site:
http://www.cablesnmor.com/rj45-coupler.h...
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Yes they deal in an adapter to put 2 together, try radio shack, BB, CC or Staples.
yes i reflect on it is call a ADSL Router,but i ponder you would know how to receive this answere from internet by asking that greatly sound out did you try?