I'm trying to do the same thing as the OP (remove lang files) and I have the 2009.1 High version for an e46 with MKIV drive.

In my /TPD folder I have a TPD3.DIC file and a ntcBusa_na_20080812 folder.
In the ntcBus... folder I have 2 files (INFO15.PSC and LPOI.txt) and 6 folders (ENG, FRE, ICONS, IMAGES, SPA, TABLES)

Where are my lang files?
Inside FRE and/or SPA?

Thanks in advance.