Networking

It has been 2 months...
I recently moved, and I need set up my network. Got a problem. Verizon FIOS has its own router with wireless, and I get an ethernet cable from there to my office, in my office, I got several computers, and I got an additional router. So what I do?

I tried to set up additional router, and it doesn't work. It turned out that you could not just add an router on top of anther router, but you could use the router as a switch, which means you don't use WAN port, instead LAN point, in this way, your router is essentially a switch, and it works.