(make backups of all original files first)
Note: These files are for learning German -- unfortunately a lot of the teachers planning on using The Sims 2 in their classrooms are French teachers. If anyone knows of resources which would be helpful to French teachers please mail me ravip(at)mit(dot)edu so I can either pass them on or put you in-touch with the teachers.
If you haven't already, see the explaination for these files at http://www.archive.org/details/the_sims_teach_german [Direct Link] . Also, if you only have the English version of the game, see here for information on setting it to read the German files.