Basically, I've been playing tekkit with my friend over Hamachi and we've just been playing normally. We wanted to make some Quantum Armour but coudln't be bothered to make all the UU matter so we want to just cheat it in.

Does anyone know of any possible ways for us to use NEI to bring stuff into our current world ?

I saw somebody complaining about people who would play singleplayer tekkit, use NEI to get what they want, save the game and then use that save on the multiplayer tekkit world.

Anybody know how that is done ?
Any help would be greatly appreciated.