It's okay you know now.
Avoid double posting as it just clutters up the forum, if you have something else to add use the edit function.
You can copy save files by going to the XBM menu (Press the PS button)
Then go to Game - Saved Data Utility (PS3)
Scroll down to Gran Turismo 5 (It will be at the top if it was the last game to save) and press triangle.
Select Copy and set the destination to the USB drive you have presumably plugged into your PS3.
Then at the other end (on the second PS3) go into Saved Data Utility again and copy the save file from your USB drive onto the PS3, overwriting the save file on the PS3 and replacing it with the updated one.
Oh and one last thing;
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