Shiv

I'm new here, and have a stupid question as I'm currently in the process of selcting mods for my playthrough of this game, so far I've got TSLRCM, and a few weapon replacements that should be compatible. My question however pertains to the install instructions..What does it mean to (backup "k_death_give_ls.ncs" and "a_give_quest_ls.ncs" ? Apparently it's neccesary for TSLRCM, but I'm just not sure how to go about it, I've already made a back up of my overide folder before any additional mods, and the others simply drop into the overide folder. How do I correctly backup those other files, is that all I need? or is it something to do with the backup folder I can see in the list?