Now, go back to the emulator folder that u opened, for example: - You went in the [PSP]EmulatorsPack extracted folder, you chose the ‘Sega 32X, Sega CD, and Genesis Emulator’ folder, u go in that folder then you find another folder named Picodrive1.92.3, now move the folder Picodrive1.92.3 in the GAME folder that u went from PSP>GAME. More @Wikipedia
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