pcxs2

k so i'm kind of new at this but i want to know how this works.i downloaded a pccs2 file from the actual site or atleast from what popped up from google.and it came with a software to install. odd thing is that i've used other emulators before and they are just programs rather then a software.another problem popped up. it said something about bios.i tried using torrent files. downloaded but it says the input files are different from the listed bios.help please.

You will need to find a good BIOS file.
Search around on Google, you'll find something.And yes, PCSX2 does install itself, rather than just being a standalone program like no$gba, VBA, or ePSXe. That is normal, and nothing to worry about. It is just how the creator made it.