Am I understanding you correctly ? you are pulgging one router into the WAN port of another router ?
If so, then stop. Its not going to work.
You can use teo router if you like, as long as you only have one of them issuing DHCP assignments, and doing any routing functions.
If you are sure that you want to use both, setup one as a router and then use the other as simply a switch. By doing this you will increase the amount of available ports. The 2nd router will need to be plugged into the LAN side of the 1st.
Feel free to elaborate, if I am missing the point here.
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