DyKnow supports the use of Unicode characters when using the Text Box or Full Panel Text tools to add content to a notebook. Unicode characters are automatically removed when using the Chat or Polling features.
DyKnow supports foreign language keyboard inputs, but currently the user interface is only in English.
To change the language type setting, change your keyboard from a US style to Spanish input. For more information, please consult this article: http://support.microsoft.com/kb/258824
Be sure the language pack from Windows is installed before doing this. If you have Windows Ultimate or Windows Enterprise, it should already be installed.
Client download is available here: http://www.dyknow.com/download/