playing playstation one games on psp

I have been looking around the forums lately and I see that its possibly to be able to take your own PS1 games and make them into iso files so you can play them on your psp. I saw somewhere that you needed a program called Alcohol 120 and a popsloader. I got both of them and tried to use it but I can't get it to work. Is their a step by step guide anywhere that can help me do this. My CFW is 3.90 M33-3

http://psp.brewology.com/forum/viewtopic.php?t=9383

Thought ought to work. It is fairly easy to rip the ISO, but you might have trouble with the converting it to EBOOT.PBP form.
In that case, use this. It can convert IMG, BIN, and ISO files to playable EBOOT files.

ok I tried it out with my FFVII it work in till I went to start a new game then the screen just turns black. any help

Edit: never mind I got it working i just needed to use 3.71 pops when I play it