Neo CD PSP help

I have a very odd metal slug rom (its in 3 seperate zip files) and I was wondering how to set it up to work with the Neo CD emu. basicaly the rom files are as follows
zip 1 contains:
Metal Slug- Track 01.iso, and mp3s called: Metal Slug- Track 02.mp3 through
Metal Slug- Track 20.mp3
zip 2 contains & 3 both also contain 20 files with the exact same names as the ones in zip 1 (Metal Slug- Track 01.iso, mp3s: Metal Slug- Track 02.mp3 through
Metal Slug- Track 20.mp3)
any help getting this set up would be much appreciated

1-you got hold of the neogeo cd bios first, because u can't play ant of the games without that.
2-make a folder and name it neogeo.mp3, now put all of the mp3 game tracks in that folder. now use WINRAR to extract the files from the ISO. when that is done, make up a folder with the name of the game u extrcated and put the files in it and also the mp3 folder too. now u shold have one folder and inside should be neogeo.mp3 folder with mp3 tracks inside of it, and all the extracted files from the ISO. now copy the whole thing into the rom folder inside your psp/game/neogeocd. thats it