1. I think you must mean a 2100.

2. The language is in rom. I don't think it can be changed. (I could be wrong, but see #3).

3. Sell it on eBay Germany (Austria & Switzerland too) and buy another one. Virtually all young or youngish middle Europeans have some English, so language is no barrier. I gather that the German MessagePads are rare. You could most likely buy two English-language Newtons for what you'd get in Euros or Swiss Francs for a German one.