I'm attempting to setup my

Question

I'm attempting to setup my linksys Wireless-G broadband router up in my home as a secondary wireless router so that i can obtain wireless signal in my basement. I'm running an ethernet cable to it and it is working as a splitter, in that i can run multiple ethernet cables out of the router and they work, but my wireless signal has not improved. how do i setup my router so that it gives of a signal or is my computer just not recieving it?