Does a game need to be made into a ROM?

[mikki]

I downloaded a game and an emulator all for PS2 but I don't know how to make it work. I don't know if I shoul have downloadfed a game thats already been made for emulation or what? If anybody knows...THANX!!!!

[mhl12]

clicky--> http://forums.emulator-zone.com/showthread.php?t=1785