HELP IN ADDING JERSEYS.. =)

Help in adding jerseys..

For example in NBA 2k10, BUCKS has only 4 jerseys in away and 3 jerseys in home, that includes the retro's.. what i like to do is if i can add a 5th jersey in away and 4th jersey in home? because when i tried to rename my file in to r4a001.iff, the jersey didnt show up.. but when i tried r2a001.iff, it overwritted a file and my jersey showed up in game..

My question :
How can i add my jersey for a certain team without overwriting other files?

BUMP! T_T

Not possible

Oh my.. Now i know..

Thanks SkyLine03LT