I've been using PSX2PSP to make a lot of my postation eboots
http://www.maxconsole.net/showthread.php...tation-GUI

the PSX2PSP program has a lot of bugfix/compatability fix settings that have gotten a number of popstation games working for me...
it also has mutli disk support and does a lot of things that the Zinga's popstation GUI (sorry zinga) doesn't do oo...

if you don't want to do it yourself you can probably find the psx2psp torrent for the game you're looking for on thepiratebay