To change the language in Pro Evolution Soccer 6 (PES 6) , you must manually replace specific
files for your desired language (e.g., English, French, German, Italian, Spanish, or Polish). Locate the 'Dat' Folder : Navigate to your game installation directory, typically C:\Program Files\KONAMI\Pro Evolution Soccer 6\dat Backup Original Files : Copy your existing 0_text.afs 0_sound.afs files to a safe location before replacing them. Replace Files : Move the new language files into the pes 6 language pack
For versions that only support one language (like the English-only release), you must manually add the files: To change the language in Pro Evolution Soccer
Maintaining and customizing a language pack Report: Pro Evolution Soccer 6 (PES 6) Language Packs
Since the game is abandonware, these files are usually hosted on community forums like , Evo-Web , or via the PES 6 Firebird Patch repositories.