I always use "space" as change player . In PES 3,4,5 it can be configurate in settings.exe, only in the button configuration in the game - in PES6 konami have change button configuration and i manage to set "space" as "change player" button through this solution:

"Go to Settings in your PES6 folder.Then press "Keyboard".there you double klick on the button and you have to press a button you wish but its difficult with space because every time you press it it reacts with the cancel button so you have to double click on the L1 button ( it is for changing the players) and when the menu "push any button" appears hold down the CANCEL button with the mouse cursor and without letting it press Space at the same time then it will change it ."

But Now in Pes 2008 this solution seems not to work' they change it or done something to the setting file so now I can't get "Space" to Be "Change Player" button... :(
Anyone has a solution or something' cause I'm out of ideas' maybe someone manage to change it in his setting file and he can upload the file so i could dsownload it' or something...

Please if someone has a solution write here' i'm sure this will be very helpfull not just to me...
Thanks And Hope SomeOne Has An Idea...