@peter i think your instructions should start like this : if you dont have java on your pc go here and install java http://www.java.com/en/download/index.jsp next right click the whatsapp file and open with java proceed with the entering of details on device: enable extras testing repository (if not enabled) and look for icedtea6 (or higher) install place the same whatsapp jar file on the n900 (documents) (then the rest of your instructions)