If you are going to hack and find any of the files you must follow these steps.
1. Plug in to your PS3 a USB or flash drive. (whatever you want to call it)
2. Go to "save data utility" and save your call of duty 4 data onto the USB.
3. Plug the USB into you Laptop/PC.
4. Open you usb doccuments and click on a newly made PS3 folder. (for first timers)
5. Look for a folder that says save data and open it.
6. In save data Look for a folder that says BLUS30072-AUTO- which is the call of duty 4 data.
7. Look inside the folder and you should find the GPAD0_SP/MP/CM files.
8. Right click on them, go to "open with" and choose wordpad.
9. when the screen appears with the codes, in the correct files, copy and paste the hacks over all of the previous codes and save.
10. After saving romove the USB from your Laptop/PC and plug it back into the PS3.
11. go back to "save data utility," go to the USB and copy the data from the USB onto the PS3.
12. if it asks you to overwrite the data say "yes."
13. after copying the hacked data from the USB, go to "saved data game" and delete the call of duty 4 data. (i know you are asking yourself, "y delete the data?" this is only so you delete the ver. 1.30 patcher. aan if you play the game before you it statrs it will ask to update to patcher ver. 1.30, say no.)
14. start the game and have fun.