Plug in a usb hdd that has been formated to FAT32.
Run the PS3 backup tool. This will back up your saved games and game data.
Sync your trophies with the server.
Upgrade your ps3 HDD.
Run the PS3 restore tool.
You will have your game saves back, game data and all the games you downloaded from PSN.
Worked for me, and I had SF4 and RE5 save games
Last edited by hnguy; 08-26-2009 at 07:51 PMReason: added in last line