Accident, total damage, insurance and loss of use

Hello guys, my car was hit by someone on 23.05.2012. The damage is considerable, my vehicle was no longer ready to drive, according to telephone information from the expert a total damage. My car was parked and I only learned this from the phone from the opposing insurance company (HUK-Coburg). The insurance immediately initiated the towing and got me a rental car. The car was towed to a partner workshop of the insurance company and presented there to an expert. I have returned the rental car on 30.05.2012 and informed the insurance company that I would like to claim loss of use from now on. I also informed my insurance company (HUK24) about the damage, but no more. Now the report is still pending. As far as I have informed myself, it may happen that the insurance officers can find quite one-sided valuations. Of course, I want to get the best possible solution for myself. How do I proceed now? Some questions: 1.) Do I turn to our legal protection insurance and consult with a lawyer? Will he then hire an expert “in our interest”? Will I also get usage loss over this time? 2.) Do I have to register my car or wait for the report first? 3.) Can I have my car transferred to my home town at the expense of the opposing insurance? Thank you!