I want to put a game called killer instinct on my psp and its a nintendo game
i have the SNES emulators and my firmware is 3.03OE-C.
and the killer instinct file has alot of files do i copy them to the Rom file?
i did this and it said the game could not be started please help me.

What do you mean by "alot of files"? I thought SNES ROMs were only one file.
Exactly what files are there?

these are the files it has killer instict (U) (V1.1) [!].smc
the other files have different names

http://daroms.com/dl.php?id=475

thats the link where i got it if you guys want too download it and take a look

I just had a look; the only file you should need is "Killer Instinct (U) (V1.1) [!].smc".
All the other files are simply different versions (regions, dumps, etc.) of the game.

Which emulator are you using on your PSP?

yeh u can compress the .smc file to a zip file for less space

try to use snes9xtyl emulator, then place the rom file under the directory ROMS, that should do the trick... i tried to download a file the the site that you gave, there's a lot of same file with different names... usually all of them are rom files, just choose one and try...