Eh, if possible i'd like to just grab the bios without an entire set of games coming along with it. As for the games potentially not working with Nestopia, well the only other Nes emulator I have is jnes and it doesn't even recognize .fds files.
There we go, you need to update
Currently the only way to get the latest build is either do it yourself or use Retroarch, if you wish to learn how to use it il be more than happy to teach you, I was just playing it from the no intro set, runs fantastic.
THE BEST METHOD to run PSX games (and everything else for that matter) is via Retroarch - http://buildbot.libretro.com/nightly/
If you have any questions on how to set it up on Windows please feel free to ask, its very easy.