|I've been hooking LAN to WAN (which, by the way, worked the first and second time I tested it).|
This configuration will work but requires more know-how and setup time. Generally speaking, I wouldn't go WAN to LAN except for when I'm going to have one router on one subnet, and the second on another subnet. As long as they're going to be on the same subnet, I always use LAN to LAN and that's why I recommended it. It's easier to setup and in the case of problems down the road, it's also easier to troubleshoot.
When you go WAN to LAN, this requires routing. When you go LAN to LAN, no routing is necessary. This is why it's preferable in this situation.
Does this mean that I'll have a line going into one LAN port, and then another coming out of another LAN port going to the computer and the third going to the third router? T
If I'm reading this correctly, yes. As I'm understanding the above statement/question, you're asking if:
Router 1, port 4 connects to router 2, port 1. Router 2, port 2 connects to router 3, port 1.
Router 2 port 3 connects to a client PC.
Ok, what I gather from what you've said is that my problems have been 1. - I've been using a different DNS address than the gateway IP, and 2.
I can't say as I don't know anything about your IP addressing since you didn't post any of that info with your question. My example above does indeed work, I've used it before.
If it were me, here's what I would do. I would get rid of 2 of the routers and use only the wireless router since you want a wireless network. I would buy one switch with enough ports to cover all present clients with additional ports to allow for growth. So lets say a 16 port switch.
Here's how I would have it setup:
Internet >> Wireless Router >> 16 port Switch >> Clients
Done my way, you only have to setup one router. You plug the switch into a LAN port on the router and anything you plug into it will now have LAN/WAN connectivity. That's a whole lot less muss and fuss than what you're trying to do.
The general principle in computing is the KISS principle. (Keep It Simple Stupid - and no, I'm not pointing that at you or anybody, that's what it stands for right). The scenario I just described, one router, one switch is a LOT simpler than daisy chaining 3 routers. The more complex you make something, the more likely it is to break AND, the harder it is to troubleshoot when it does (notice I said "when" and not "if"). So whenever possible, keep your setup as simple as absolutely possible.