The old models cannot work with the new one!!!! since the old communicates using MAC address and the new one is using SSID.
From Linksys I got a solution - to use Edimax EW-7206PDg that can act as Universal Repeater - can connect to any wireless network with no extra setting in base (router)!!! here is the link:
»www.edimax.com/en/produce_detail ··· pd_id=20
Hope that helps... it did to me!