You will see files named BAL01.bin , BAL02.bin , etc. This is your career save.
Just remember the golden rule: Respect the balance of the game, and you will get dozens of hours of joy from a classic football title that modern games simply cannot replicate. Pes 2009 Become A Legend Editor
Navigate to: Documents/KONAMI/Pro Evolution Soccer 2009/save/ You will see files named BAL01