I'm not from Germany, never been there, either...BUT...I know some gals who've moved overseas. Instead of trying a crash course in the native language so they could be fluent in like 2 weeks (YEAH, RIGHT), they went to work on a US military base. That way, they could work amongst folks who spoke English, were mostly Americans, but could still have TIME to learn the native language and culture.
On a side note, try children's books and tapes (you could probably get your hands on some at Amazon
.com) for learning German. Really basic stuff, taught by using songs a lot, and good for beginners. I know it sounds dorky, but for those of us who only know how to say 'thank you' and 'you're welcome' in German, those kid's programs are a real Godsend.
Have fun overseas, and good luck!