okay Here we go once your psp has CFW open up your PSP. Then go inside the psp folder at the root of the memory stick. Go inside the GAME Folder if you don't all ready have it Make in CAPS. Then download a elum called gpSP just google it for newest version. Once you download extract it with winrar or winzip or somin. Drag it inside the GAME folder. open the gpSP folder and search for a folder called ROMS. thats were you put the gba files to get ROMS Just google Pokemon Emrald Rom. it well be like Pokemon.gba it must have .gba after it and must be in the ROMS Folder. after that boot gpSP on your psp and go to games and select the game you wanna play and bam your now a working elum is on your system. NOTE: the gba roms are the same roms on the computer so roms you use for visual boy (a gba elum for PC) well work on gpSP.