ohh, youll need Four things things.
1. the pesfan editor
2. max drive
3. french OF
4. The other OF
Ok open up the your french OF in the pesfan editor, unedited would be wise. Then go to "file" and click "open OF2". then go to "Tools" and click "convert OF2 > OF1". then save and the OF should now work with your french version of pes6. all you need to do is transfer the OF to your ps2 via the max drive.
*note* the conversion is not perfect. you might have some players that have the wrong face, etc but you can correct them easily.