I need help with playing MAME roms on my psp

Hello guys, I am able to install and play all the homebrew applications perfectly except the MAME emulator. I am using MAME4ALLPSP emulator for the MAME roms. Here's what I did: I downloaded some roms which is zip files. I put that zip file into X:\PSP\GAME\MAME4ALLPSP\roms folder. Once I did that, I try to load the emulator, but then I keep getting the error message "No available games found U_PSP:\GAME|MAME4ALL\roms. My PSP firmware is version 3:10 OE-A and I am running under Kernel 1.50

lol, You have to extract the roms from the zip file.

I tried that as well, it didnt work either

Inside the zip file, the files are like this:mvc1, mvc.2 and so on

I have no clue. Just put those files in there and try them.

mame runs on romsets so you might need to get the right roms from the right romset for it to work with psp mame. (hopefully im not breaking rules) but yeh theyre made in sets bcus mame effectivley emulates 1000s of machines so they are organised by mame versions