The below suggestion is not what the OP appears to be looking for ... since the article specifically states the following:
Wireless Network Name(SSID) : Must Match Primary Router exactly including exact case- Make sure you spell this correctly
Yes this is possible, only if you install aftermarket firmware onto your second router (the router that you want to extend your network with). I have done this with DD-WRT http://www.dd-wrt.com/site/index
Look up the the router you are trying to use on dd-wrt.com to get the directions and appropriate firmware. Once you have DD-WRT installed on your router follow these directions. Hope this helps.
http://www.dd-wrt.com/wiki/index.php/Repeater_Bridge
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