You're looking for information on saving data for "Dragon Ball Z Shin Budokai 2" on the PSP. Here are some useful details:
PSP/SAVEDATA/NPJG00026
The save data for "Dragon Ball Z Shin Budokai 2" on the PSP is stored on the memory stick. You can find the save data in the following directory: dragon ball z shin budokai 2 psp save data hot