Hello there^^

I need some help "modding" a PS2 Game.
As said in the title I'm talking about "the Getaway"...

I'm currently trying to get to the folders where the 3d-Models are saved to check out if some of these Cars ( http://www.youtube.com/watch?v=hmcLnyAD_yU ) from the beta are still on the final version (and maybe can be "activated" by replacing some 3d-files from ingame cars with the "deactivated" beta ones)

However, I'm failing at the very first step : Opening the files on the Disc-.-

It seems that all the main files are packed in ".pak" files...I tried tons of programs (even FF-model viewers) ,but non of them is able to open those .pak files...

Does anyone know how to get to the 3d-files?

thanks for helping