from zear to me from me to you...enjoy :)
1. Copy it on your card, into /local/emulators/psx4all
2. Copy PSX bios into the same directory, rename it as scph1001.bin
(correct bios md5 checksum: b9d9a0286c33dc6b7237bb13cd46fdee)
3. Modify local/dmenu/themes/[your_theme]/menu_emulators.cfg and...