Xml Content Translator is a small free (released under the GPL license) program for translating the content of an xml file.Download now (30kb zip file)
The first column in the list view is the name of the xml node.
The second column in the list view (first file opened) is the "Master" xml file which cannot be edited.
The third column in the list view is the file that will be edited via the textbox in the lower right corner. This file will be saved with only the tags existing in the master file (via "Save" or "Save as...").
If you have any questions/requests feel free to email me.
And I almost forgot - here is the C# source code ;)