sorry for the delay , i wasnt near the pc last few days ...
if you wanna edit the names of the forthcoming rookies , u need to use DB commander , and with it to edit the players.dbf file in the safe game itself .
choose a save game you wanna edit , open it through the db commander the players.dbf file , and look for the names of the rookies you wanna edit .
just change the values in the table , name , position , looks .... thats it !
worked just fine for me ...
good luck