How do I get an emulator to run on my PSP?

Okay, I'm sure this is a total newbie question, but I've seen maaany guides, and none of them work.
I'm guessing they all work pretty much the same, but I'm trying to get a DOS emulator on there. I've already got it into an EBOOT.PBP but whenever I but that file in my PSP , the file is nowhere to be found in the menu. I've seen some guides that say to put the folder containing the EBOOT in the "GAME" folder, which I do not have. All the games I have are in a folder called "ISO", so I put it in there and have had no luck whatsoever. I'm running 4.01 M33-2 custom firmware, if that matters.
Thanks~!
Also, it's PSP 1000 (so, FAT)

I haven't messed around with my PSP in a while but I'm pretty sure you need to make a folder called GAME150 and put the files in there. Make GAME150 on the root of your memory card, the same place that GAME and ISO are located. Good luck!

Aha! Got it, thank you!