I go through the whole installation process, follow the directions step by step and then I get to where it says to change permission to 777 but it does not say how, or where or anything. I keep reading to change the ngalery folder but which one, main one…and then if so how do I do that? Every other part of the directions is to cut and dry and then this huge step is simply mentioned as a footnote and it makes no sense to me. HELP!