A:AnswerYes, Twils. As long as your Internet Service Provider supports broadband Internet connection such as a cable or DSL modem with RJ45 (Ethernet) connection, it should work. Here's the link for the installation process: (http://www.belkin.com/us/support-article?articleNum=10829).
A:AnswerYou should have no conflicts with the other router as long as you use a different IP Address for it. But if you let take you through the automated configuration it should be fine. The metal building might be your only issue with signal, but if you stay inside the building it shouldn't be an issue.
A:AnswerI had the same problem at first. Then I got a stronger ethernet cable. Works fine and gets long range. Originally had a cat5. Purchased a cat6 and haven't had any problems since.