Thanks a lot for your time.
Ok i tried it. It said all documents opened and changed, but the i open the documents and nothing changed. Maybe the "Trebuchet MS" isn't correct for macros, i don't know.

Edit:
Ok my fault... I said to you in my first post "Trebucket MS" but the right is "Trebuchet MS"

I changed it and worked like a charm. Thanks a lot for your help.