Internationalizing

hi folks,

In order to internationalise my J2ME application in Netbeans4.1, i have 
gathered all the English  strings in UI of  my application  which is to be 
converted to German and French , to a separate class called 
Resources.java(the class which is Internationalized).

using the steps given in the below link
http://www.netbeans.org/kb/41/quickstart-mobility.html

i created LocalizationSupport.java and messages.properties. with my 
application. In project view inside, messages.properties i have

1.default laguage     -  for English
2.de_DE-German(Germany)
3.fr_FR-French(France)

which contains the keys and stringvalues used in my application.
Now on selecting any choicegroup element called "English"
,"German" and 
"French" , all the strings in my application should be changed to 
corresponding language.

Plz suggest ,how to implement that using the above 3 files.

Thanks in advance
yafy