no, u just need a network adapter to and a modem, u can use the modem u already have, wheather it be 56k, or cable, i wouldnt play with 56k cuz theres too much lag, network adapters cost about 40 bucks, u attach it to the back of the Ps2 and then hook ur line out from the back of ur PC to the Ps2. Its one of the best purchases i have made. Its so much different than playing the meaningless cpu, u can chat and have voice chat so u can talk shit on other players, go get this, i still play NBA LIVE 2003 everyday online, i dont even like the game that much, its just fun to have a real person on the other end, u use more strategy