by Rick Jerz.
Osmildo, witht he advice that you have received, you might be fine now. However, if you are still having problems, might I ask you how you have tried installing Moodle? For example, are you using a one-click install routine from your web hosting company, or are you installing Moodle from scratch yourself? Also, who might your web hosting company be, and is this a"hosted"server or a VPS?