How to extract PSP God of War models

[BTK69]

How do you extract PSP models. I want to know so I can extract God of War models. I have ISO of both both games and inside the GoW: Ghost of Sparta and the models must be kept in G:\PSP_GAME\USRDIR\DATA where all the files are all .BIN. I believe the key to decryption lies within the G:\PSP_GAME\USRDIR\MODULES where all the .PRX, which I'm assuming is the PSP equivalent to .dll/.so.

Can anybody help me?