Best ratings for players

[stampy13]

hi I am trying to edit Players for a new teams of my own struggling a bit with a few things ie:

current and potential ability what is it out of ? some of them have -6 for example, what would be the best does it go down to -10

and if anyone knows how to change the badge/logo

 

[Raikan007]

take a look at this mate

http://www.fm-base.co.uk/forum/football-manager-2011-players/48054-complete-ca-pa-thread.html

 

[stampy13]

thank u