How do I set up my daisy chain of routers?

[Adrian]

You can use many routers - the whole Internet is made of routers all connected to each other.
The key is to make sure each router has a separate, different subnet from the others. Also, if running games that require NAT, with two or more routers, you have double NAT. In some cases, you may need to open up the first router (closest to Internet) with either a DMZ to the second, or do double port forwarding - first router forward to second router, second router forwards to PC....
Problems come about when multiple routers are not configured properly. I have 3 or 4 routers on my service (but I do have multiple public IP addresses). I've run 3 routers in a row at times, it all works 100% if done right. There is no speed difference either. Most of these people saying you can't, just don't know how, or are simply propagating "urban legends" about what works or not...

However, if you are not sure how to set up multiple routers, get some help from someone who knows networking...

Basically think of it this way, each router is a Internet service, and your next router has to pretend it is next in line, and has to be unique in its config. A ISP connects to your modem via a router, with their IP address. Your first router connects to that. the second router, has to think of the first router as the ISP router, and you need to make sure it is configured properly...