Emulation of JAP ps1 games

Hello, im sorry to post this as im sure it has been answered before but searching has not given me a clear answer. I will have shortly in my possesion two Jap PS1 games(i ordered off of ebay). Now i have two questions:

What bios will i need to run Jap games?

I have a psp currently using 3.40 OE A', and i know that the psp has support for ps1 emulation, is there a way to get my games packaged as iso's to use on my psp/will it even support that?

Thank you in advanced for any help you guys can give me

You can rip your PSX games with programs such as clonecd into an image file (ISO, CUE & BIN etc...), you can then use a program such as PSX2PSP which will combine that image with an emulator sony has created to form an EBOOT.PBP and depending on which program and settings you use you will also get a keys.bin inside of a folder. You can then copy this to your PSP's memory stick and play.

You dont need to worry about bios, as the sony emulator includes all the necessary files.

This guide here should help you.