When you download the file in the link....
-Copy it to your PC
-Unzip the file(double click it I believe will do it) and copy the files onto a USB stick
-Copy the files from the USB stick to the SAVEDATA UTILITY section(PS3 section of SAVEDATA) to the PS3 hard drive
Just make sure you load the file or choose SAVED rosters when starting a franchise.
Let me know if you need more help.
M.K.
Knight165