The steps for translating the installer file (Languages.nsh) are:

- copy all LangStrings for LANG_ENGLISH and put them at the end of the
  file (but before the ";; Local Variables" line), leaving an empty line
  between languages
- Adjust the copied lines to use the correct language (e.g. ${LANG_GERMAN})
- Translate the string contents.  Embedded quotes are escaped as $\"; if
  you want to force a line break, put $\r$\n in the string.
  $(xxx) or ${xxx} should not be changed (they refer to installer
  variables)

The DESC_* strings are the descriptions used for the install components.
The LOG_* strings are written to the install log (also shown if Show
Details is used in the installer).
The NAME_* strings are the names used for the install components.
The MB_* strings are used in message boxes.
The other strings should have self-explanatory names.


NOTE: You may also want to check
      http://cvs.sourceforge.net/viewcvs.py/nsis/NSIS/Contrib/Language%20files/
      to make sure than the common parts of the installer are available in
      the language you're translating to.
      If not, there's not much point in translating the POLUtils installer
      messages.