i'm a new user to ps2 so just bought the modern SDH-77006 latest modern of the Playstation 2 model ermm kind of cheap bought under RM512 so now i just bought a dvd code breaker 4>1 code breaker+HDloader+GameShark+GameMaxReplay and i wanted to play the cheat and i found that my playstation didn't have hard disk -.-" and i dont know what a playstation hard disk is ? and how much would it cause to me -.-" anyway just wanted to know anyone here using playstation with network adapter and harddisk what this 2 thing does and do ?????