1. Back up you original Pes 2009 save game folder (found in Users/[you]/Documents/Konami/PES 2009) to your desktop.
2. Replace the old save folder with the save folder in my download folder to where PES saves your option file
- Usually Users/[you]/Documents/Konami/PES 2009
3. Copy across your original option file (PES2009_OPTION01) from your backed up original save folder into the new save folder
And also any save game file (master league saves are called PES2009_ML01, Legend saves are PES2009_BL01 etc)