really your best bet would had been to buy a psx bootdisc there cheap.
i had one along time ago i might buy me another one myself.
you could had just got that and downloaded sotn jp import but oh well, you really should had shoped around before buying the sys with no hookups too.
i'd check online video game stores they will sell you the parts you need.
being they sell both japanese and usa game's,sys and parts
good luck