Installation confusion: IH3 using ZC 1.3.9h

I have followed the renaming of folders and such in the installation folders within the download of IH3. I don't mean to sound stupid, but the next bit of instructions asks me to place the contents of (1 Install Files and 2 Required Core Edits) into my store. I dont have a folder location by way of FTP called "my store". Where exactly do the contents of these two folders go in the hierarchy of my zencart folder on the server?

I already have folder names which are the same as I'm copying over from these two folders, I want to make sure I'm putting them in the right place and not over-writing a folder by accident.

Thanks in advance, and please excuse my stupidy, I'm only a few days into using Zencart.