You don’t edit .mo files directly you edit the .po file and then regenerate the .mo file as the .mo file is a binary format.
Read the Translating_WordPress article on the codex for more information on editing the translation files.
westi, thank you for your help.
I got the .po file and change what I want on my language. Now I just can understend how to compile it.
Can you tell me more about how to do this?
Thank you again,
Rui
On the Codex page westi linked above there is explanation how to generate the .mo file.
Of course, Notepad doesn’t help in this case, sorry. For generating .mo files you need special software, please read the Tools section of the Translation page.
