the mic head set part is a universal piece but the remote is were the trouble starts!
in order to tell if you have the right remote look at the head(part that connects to the PSP) if its slanted i think that's the PSP-2000(SLiM), if its not slanted its for the PSP-1000(FAT). now if you have the correct pieces go into a game, and just talk, they will tell u "o i cant here you" in chat or over mic! good luck!
~~if you want ill help you test!