right have to ask before i go fucking nuts!

When i bought my router i bought another wireless box for my brothers ps2 this to be exact..

http://cgi.ebay.co.uk/Belkin-Wireles...QQcmdZViewItem

but now it doesnt pick up any internet or nothing at all been trying allday to get my mums p.c websurfing! but its not having any of it

When its plugged in my mums p.c it say limited internet & no connectivly or something, it isnt getting the i.p for some reason tryed repairing it so many times as i normally do but it just fucking me off now!