Grabbed these from the net:

NABOO STARFIGHTER: First enter "CDYXF!?Q", then "ASEPONE!".
MILLENIUM FALCON: First enter "MVPQIU?A", then "OH!BUDDY".

I read that they are permanent so don't use them if you want to earn them the hard way

P.S. I have not tested them myself yet so post if they don't work & I'll remove this thread.

Thanks. I already have the Milleneum Falcon, but the training mode bores the hell out of me, so I doubt I'd ever play through it the four times required to get the Naboo ship.