Toucha

Hey there guys. Im trying to install facetracknoir with DCS world so i can use it when i play a-10c. I followed the tutorial up to the point where i must change the .lua file line 27. I opened the specific file as a notepad and wordpad program, but everytime i go to change the line and save it denies me access. I am running as admin on my computer, is there any reason for this? windows 7 64 (x86) is what im using by the way thanks for any help you guys can give