Use Belkin f5d7230-4 as a wireless access point

Question

I have a linksys wrt160n router, and I'd like to add my belkin f5d7230-4 router on as a wireless AP, basically to extend the range of the current network. I have tried configuring the belkin as an access point through the web utility and have assigned it an IP there at the top end of the range assigned by the linksys DHCP server. Currently, the linksys router can see it when it's connected via ethernet cable but not when it's disconnected. Any suggestions for configuring either router?