Here is how to rename items, blocks and even what 'Single player' is! you go to start and write %appdata%. So you go to the .minecraft folder and afterwards the bin folder. open the minecraf file with WinRar or zip7 or a other zip program. Open the lang folder and you can see ALL the languans there is in minecraft. The most easy to make is en_US.lang. set en_US.lang to you desctop or another folder and open it with noteblock. Now you just found that thing you will give a new name and just write it over. When you are finish so save it and close it down. Go back to the lang folder and owerwrite it. when you go to minecraft with you languans is English it should work. It not work in a texture pack ;(. The other languans are just in one big line so en_US.lang is easy so take that first! Do you have a texture on it still work but you cannot take the lang folder into you texture pack send it and there will have it. that dosent work