I have noticed that there are a few ebay members that have been trying to pass off PS2 network access disks off as a product that costs money . This disk is needed to access the online gaming features available for Playstation 2 owners and you can get it free by visting the website at the bottom of this page and completing the instructions listed there. WARNING : Anyone that tries to sell you a disk that is called a PS2 Network Access Disk is trying to con you !! I haven't seen anyone actually buy this product but im sure that there have been people who have.
Here is the website that you need to visit in order to get you access disk, you can copy and paste it into your browser
ps2registration.com , make sure you put the www. before it
If you already have a PS2 then all you have to do is register with the website and they will send you the Network Access Disk. There are easy-to-follow instructions on the site so i won't waste your time repeating what they say.