Snes9x Isues

Ive tried to use several different emulators based on snes9x and none of them seam to be able to recognise any of my roms, no matter where i put them. I'm not new to homebrew (own a gp2x), but i am new to homebrew on the psp. How do i get snes9x to "read" my roms?

The emulator folder should go in:
PSP\PSP\GAME150
So
PSP\PSP\GAME150\*SNES EMU HERE*
Then put the ROMs in a this folder, with the eboot.
Make sure they are actually snes roms. (SMC iirc)