if its a netgear username is admin password is password.
And while you're in the router.. change to WPA/WPA2 for better security.. WEP takes seconds to break.
really??? (thats a serious question...I changed my BT homehub from WPA as I couldn't connect my PSP to it for s**t with WPA for some reason)
if that doesn't work you need to log back into your router and check that DHCP is enabled.