Help Comments Label

Hi, I bought the Simple Catch Pro for my website that will be in spanish and I want to change the label that appear in a post which is the number of comments along with the date and the author that have the post. So I want deactivate the comments in all my posts but now appear the text that said that the comments are disabled or something like that. So, my question is how can I change that text and put my own text, the text that I want? Please, help me.