Prelude - Read the Linksys manual, skipping any reference to setting up the Microsoft type machines (IBM PC's). The Mac (which is also a PC) comes with TCP/IP and you do not have to go through the stuff the IBMers have to put up with. Also, do not call Linksys for support! Their CEO evidently does not want to support Mac people, as they took Mac support off of their site, and they will not talk to you if you call the support number. If you have not purchased their router yet, you may want to consider purchasing from another vender who gives Mac support.

 First, get set up and online without using the router. If you are having trouble, contact your DSL provider. This will make sure you have the information you need to try with the router.

 Hardware setup:
1) Follow Linksys instructions for connecting the PC to the router (Mac Ethernet port to router port) and the router to the DSL modem (router WAN port to Data on modem) then plug them in.
The hardware is now set up.

Set up the Mac:
1) Bring up TCP/IP from the Apple Menu / Control Panels. Note: I went to Configurations and clicked on duplicate and named the new configuration Router so I could get back to using the DSL modem without the router.
2) Change the IP Address: box in TCP/IP to 192.168.1.2
3) Change the Router address: box in TCP/IP to 192.168.1.1
Note: TCP/IP should already have the other fields correct from using the DSL modem without the router.
This is all you need to change and the Mac is set up.

Set up the router:
1) Bring up Netscape and type "http://192.168.1.1" in the URL location box.  Leave the name field blank.  Type "admin" in the password. (Do not type the quotation marks, only the text that is in the quotation marks.)
     Note: I had a bad cable to the router and could not get Netscape to give me the menu from the router at this point.
2) Put the name of your Internet Service Provider in the Domain Name: box. This is the sane as you have in the TCP/IP Search domains: box (like earthlink.net).  You may be able to skip this step.
3) Under login: select PPPoE and put in your user name and password for your service provider. You may cut and paste this from your RemoteAccess if you were connected via a slow modem before.  You do not need to use RemoteAccess anymore.
4) Select the bottom two boxes and click on Apply.

 Your router is now set up and you should be able to surf the web at this point. That was easy!

 Now you do not have to start anything like MacPoET anymore. Just click on Netscape or whatever you use and you are online.

Summary:
This is so simple but what was confusing is that TCP/IP provides the URL of the service provider whether you are going through a router on not.  I kept thinking that I had to put this information in the router.  All you have to do is tell the Mac TCP/IP to talk to the router (URL 192.168.1.1) and tell your router what your user name and password is for your service provider.