[refraction]

realy thx for the answers. now, lets say i dont have the bios in the PCSX2. will games work for me? and if i do have it, will games work for me? (if the answers for both of these questions are "no", what do i need the bios in PCSX2 for?)

both answers are no, but you will have a lot more luck with the BIOS than without it.

the no to having it is basically because the emulator isnt finished yet, it is still in development, so compatability is still pretty low, altho you may see some screens like logos and menus.