Fuck I had that problem and thought I had a faulty Network adapter so my dumb ass bought a new one that connects through the usb, that shit didn't work either. Then I got on a site and they said that same shit Mr. Manlow said, Unplug your modem because it can't read 2 i.s.p. at the same time so when you plug it in to the ps2. It was bitter sweet when it worked, because I thrrew 20 bucks on a new one, don't make the same mistake I did, unplug it and put ehternet adapter in and it should be all gravy baby. Without online play sports games just aren't as competititive, go swoop that NFL 2k5 for whatever system u got 20 bucks is chunk change, evenn