I renamed .wine, created a new one with wineprefixcreate, installed and now it works! I had to rename the movies still, but battle.net works without any further changes. I should have tried this on my own, but because of my early (2005) successes with wine i had assumed i would never have to reinstall the windows stuff, since i would just carry my /home around as i changed system. A great thank you to all that helped.
