New to this but after watching a few videos online I felt like I had enough of a grasp of it to get it working. I thought I'd start with what is probably a pretty popular game House of the Dead 2, download the rom, bios and another few files that accompanied it in the roms section... "hotd2e" "hotdo" and "hotdp" I even download the first game thinking ti might be a parent but somehow the rom is still missing files when I try to load it.
I just feel that there is a crucial piece of information I am missing for all of this to make sense and for me to know what I'm doing. From everything I've seen and read thus far I have no idea what I'm doing wrong.