Modding Real Football Java Game

[Haque]

J2ME games r nearly dead now. Bt, there are always some like me who can't forget these epic games. Coming to the point, i love RF series games provided by GL. Modded versions with real player names were more awsm to play. Bt, till now no mod version for s40v3 were found by me. So, I'm tryin to modify some by myself. I've tried several times with RF15 but I only identified the .class, .midi & .png files using HEXeditor on PC. My ques is which file contains the names of the players & teams in the .jar pack? Which file is majorly modded?
*Looking forward to them, who have done this before or tried.