So here's my story. I have a standard Actiontec router in my basment, connected straight to the coax outlet, and connected by LAN Ethernet to a crappy computer nobody uses. It gives off a WPA2 wifi network, let's call it MyNetwork. For the longest time it's been the only router in the house. The coax outlet is on a splitter, splitting the coax outlet into one wire that goes to the Actiontec modem/router and the other to my TV STB. Recently we installed a new coax outlet on the other side of my house and next to it we have a brand new desktop computer that we use often. It has no wifi so and we can't run an ethernet cable throughout the entire house so we got a new Actiontec modem/router from our neighbor who just moved out. It's the exact same Actiontec device.
What we want to do is make it so that both routers give off signal on the same MyNetwork we have to make it a wider reaching signal, and so that I can connect the new desktop computer to the new router with an ethernet cable. I've read so many guides and they're all so confusing and it's such a mess that I almost completely screwed over my network. it seems like the two routers are completely independent of one another, not even aware of the others' existence. The new router is definitely in range of the old one. I've logged into 192.168.1.1 on the new computer and the new router seems to think it IS the old router (or so I think). It showed me all the same devices that have connected to MyNetwork and such, but then again it's always hard to be certain exactly which device is which. After messing around I must have changed some IP address or something, but it seems that 192.168.1.1 doesn't take me to the Verizon login screen, but 192.168.2.1 does. Can I reset those IP addresses?
And of course, can somone please provide a clean, easy to follow course of action as to how to set up two routers on one network?