I'd setup my ps2 network adapter and at the end of the setup screen it says congrats your are online, etc. So once I start goin to the Madden 2003 demo online, it goes online but it doesnt detect a server. So i try another game, NBA 2k3 cd-rip. It detects my connection and stuff but when they verify my username and password, it says it cannot detect my DNS. I tried other games it doesnt seem to work too. Does anybody have a solution?

what is your setup?

I did a manual setup and I used the info I have on my ISP address

no, what is your network setup? are you using a router, hub, switch, dsl modem, etc..
and why did you set up the isp manually?

Im on a router... and I posted manually because when i tried to do it automatically it wouldnt detect my connection. For the user name and pw, I used the one i use to go into my isp address.

have you try setting up with dhcp? and set everything into auto? I have verizon dsl along with a linksys wireless router. Since i dont have a static iP address from verizon.. just set everything to auto on both my laptop and ps2.

try to reset the router. It works for me.

You say you've set everthing manually but have you set up a DNS address?
You may have a connection with a valid IP address but when it tries to connect to a name ie, sony.com lets say, it will need to send a message to your ISP DNS server to get an IP address for the name sony.com.
Without an IP address set up for the DNS server it won't get a reply?
Hope this helps.