[_ck_]

To edit a .mo file you first need to have the .po version of it.

Then you can edit it with POEDIT

If you don’t have any of those things, first get POEDIT

http://www.poedit.net/download.php

If you only have a .mo file and not the .po but wish to add/edit the translations, you can “decompile” or reverse the .mo file into a .po file from the command line with poedit , ie.

START -> RUN

/program files/poedit/bin/msgunfmt ab_AB.mo > ab_AB.po