Como Poner Una Imagen De Fondo En Word En Una Sola Hoja

I'm kinda new on this, and need some help.I had MC on my windows with mods, when changing to Ubuntu I got the same version. I tried to install the mods I had on my windows but I cannot make it work, because there's no .minecraft file nor %appdata%. I followed instructions like copying modloader into the .jar file, which didn't work and other stuff Can you help me, please?