I have wre54G wireless range

Question

I have wre54G wireless range expander that I cannot get my laptop to connnect to. I put the startup disc in and have the expander set next to the AT&T router but it can't find my network. I have reset it several time but no luck. I put the disc in my desktop and it configured immediately. On the instructions, it says to locate the expander at the edge of the network. What does this mean, next to or at the far end of the signal? What are my next steps to get it to work?