Dial up, DSL, or Cable?
Dial up make sure you have your login and password correct..... as well as the number. Do not setup a static IP either...
DSL you need to setup the PPPoe settings with login and password.... If using router this is not needed...
Cable usually has no login not usually a problem
with at router try changing the advanced settings to full-duplex with the NA setup disc on the PS2..... and static IPs are a good way to go if your router has a firewall.. If the router has a DMZ setting set it to the same IP as your PS2.
PS3 Slim 320GB
PS2 v11 exploit w/300GB Maxtor
PS2 v10 exploit w/80GB Samsung - Network Games
PS2 v10 exploit w/60GB Samsung - Network Games
PSP 1001 3.52M33 w/10GB total storage
NDS DSReal 4GB