Never fear! Outbreak's back in business!
To get the ball going, you should get yourself a copy of Biohazard Outbreak File #1 or #2, a PS2 of any kind (region doesn't matter), or the PSX2 emulator (should you be unable to use PS2). You also need to bypass the DNAS, I don't know much about bypassing on a console but this is all you need to bypass on an emulator.
(removed link due to DNAS Bypassing Patches
(courtesy MalkaXaya for providing the link)
Included are instructions and files to get started with the emulator. As for the BIOS... you'll need to search that by yourself. (not too hard to find one though!)
you'll need to rip that yourself. (not too hard to do though!)
You should give the FAQ's a good read. If you have any questions, do not hesitate to private message (PM) me or the other members of this forum.
*edit* Need to stick to a more common legal practice.