Right need Help

Right so im getting my new PSP on tuesday, i have just brought a Pandora Battery and memory card so i can put a FW on it.

i want to put some PS1 games it, i have a great collection that i can only play every now and then and i would love to play some of them while im out of the house, such as Final Fantasy 7, 8 and 9 as well as the crash bandicoot series (great games) how do i convert the ISO files that i have to files that will work on the PSP

right so i have the 3 ISO's for FF7, disc 1, 2, and 3 what do i do to them to make them work on the PSP i heard i have to make a EBOOT.pbp file from them, is that for each disc? or do i use WinRar to make each part of the ISO into 1 big one then use that?

PSX2PSP