As from my previous post, i have already learnt how to convert PSX CD to iso format. However, when i place it in my psp and tried to play it, they give me an error saying "the game could not be started (80000004)"
May i know what went wrong?

So you definitely have converted the ISO to PSP EBOOT format?
Now if I remember correctly you have to put it in "ms:\PSP\GAME\gamefolder\" where "gamefolder" is an arbitrary name (e.g. "FF7D1").

yea.. im sure i have converted it correctly. i placed it in the correct folder too. my fw is 3.40oe-a. is there something to do with it?

No, 3.40 OE-A should be fine.
What game is it?

hmm.. my game is final fantasy 9..

Isn't there a pre-converted one you could download off this site to try?

hmm.. well i would like to try to convert it myself.. anyway.. where can i get those images for the eboot? like the .png files etc