this guide is great!

i should know this, but i dont.... how do you change a file when the owner is root? (need to do this to complete step 4 where you paste the modules to the modules file located in /ect/modules)
so, how do you do this? do you use sudo in the terminal?

im new to this kind of thing, but i really want to do this. i just cant save my changes in modules.

PLZ HELP!