Today I want to install Labymod for Minecraft, but if I want to open the Labymod file, I open it with Word.
Right click on the file, then on "Open with" and select "Java (TM) Platform SE Binary"
First of all you have to install Java, of course.
I still can't open it with Java.
You have to adapt to and then go to Java, or rename Labymod.txt to Labymod.jar.