After I copied, under Game->Memory Stick, I saw an icon on corrupted data and that's apart from my other iso game files.
To play MaMe32 emulator games on my PC, I normally double-click Mame32.exe under MaMe32 folder (roms will be placed under a sub folder). This would open a GUI application allowing me to select my desired games.
Just place the entire folder into x:/PSP/Game/X?
I did that and couldn't get it running.
This one will come in two files, MAME4ALLPSP and MAME4ALLPSP%. Put both of these folders in
(x:)/PSP/GAME150 .
When you open it in your PSP, it may say that one of the files is corrupt; DO NOT DELETE IT. The other MAME icon needs this corrupt file in order to run.