That's just a WAP. Good news, we have a how to do this in post 17 of the forum sticky at http://forums.cnet.com/5208-6142_102-0.html?forumID=5&threadID=298441&messageID=2795292#
Belkin Wireless Pre-N Router model F5D8230-4 and pre-N network card and need to extend the range with a wired repeater.
The router is in a second floor office, signal at the far end of the first floor is low, long distance so it?s not the router?s fault. I have existing RJ-45 cable in a den on the first floor that connects to the office router on the second floor. Is there a wired repeater I can use to increase the signal on the first floor?