Check the faqs on Gamefaqs or from <a href="http://www.cheats.de" target="_blank">http://www.cheats.de</a> (personal favorite code site) and see. I think FF3 has some goodies, though I can't remember off the top of my head... I normally just go to cheats.de and look when they are in the machine.
As for Cross Swords. You know, a lot of people here say it is boring... and true, it is not one of those everyday games. But, everytime I put it in the machine I play it all the way through and love it. I have beaten it about 10 times now, and everytime I try new weapon combos, armor, paths, etc... I love the legendary weapon and shield, man that makes the slashing so fun... I like CS a LOT! Cross Swords 2 puts it to shame though, with tons of new attacks, three different characters, better music, and you can jump and upper cut among other things... PLUS THERE IS A VS MODE for 2p combat! very cool.
-Nick