After downgrading, where to put emulators?

I downgraded to 3.90 m33-3 and I was wondering where do I put the N64, GBA, and the SNES emulators in which folder. I forgot where to put them. It seems confusing now. There is a % sign and other folders... Arrrrgggghhhh!!...
.....Please help.....

[ace]

The GAME150 or GAME390 folder in PSP folder.
And put yur roms in the emulators folder. Also you will need the 1.50 addon if you want to run the ones that have a % sign, but copy both folders into GAME150. For the ones that don't use the extra folder, try the GAME390 folder.