hi there, maybe you should look into the tutorials section/nba live 07 it says nba live 07 but the process to make c-faces is the same, after you finish the editing part you have to use IFF EDITOR http://forums.nba-live.com/viewtopic.php?f=119&t=63883 to import your cf into the game, hope it helps
well to start for the editing part you can use photoshop (CS2 CS3 CS4 etc), once you finish save your cf as bmp. Now you can import the texture into the iff file ps: when you download the IFF editor tool make sure you watch the tutorial to see how it works let me know how it went