You can download MOE30W's cheat file from:
http://umk3.remz.ca
Soon, a guy named "nwo" will release its software for automatic Kombat Kode and Ultimate Kombat Kode input on Kaillera. It will be availlable on
http://umk3.remz.ca for download as soon as it's finished. I am currently using its unreleased beta version that works pretty fine. Just come play with me on Kaillera (God Weapon) if you are curious about it.
The program will also do the swaping in multiplayer games!
To unlock the hiddens with that program, you can force the Galaga Kombat Kode at the vs screen. The galaga ends quicly and you can enter the kodes for Mileena Ermac and CSub.
I had a lot of fun recently with Kombat Kodes like "no power bars" or "dark kombat". This is a great tool because the opponent doesn't have to do anything.