In 2009 EA delete the user agreement and you needed to accept it to be able to make a new user account, but you can't if it not able to find the user agreement. This is how you can get pass this. You going to need to set you Primary DNS Server in you PS2 network configuration at 68.200.209.3.
After that you should be able to create a account. You don't need to use this DNS server every time you connect to this game servers. You only need to use this DNS server every time you want to make a new account.
Credit go to FreddY from http://www.ps2onlinegaming.com
source: http://www.ps2onlinegaming.com/forum/viewtopic.php?f=10&t=1049