QUOTE(singgih @ May 28 2007, 07:29 AM)

hmm.. i dunno.. its already in the PSX CD. i didnt do anything. i place the PSX CD in my com and there is a list of files in it. so i just chose the ff9.img
That sounds like where your problem is; that's just a file on the CD.
You need to create an image (ISO) of the entire CD, using something like Alcohol 120%.
Then you can convert it to PSP EBOOT format.