Hi guys,
I'm still up to this! I already know the lawyer, I met him at the end of November during the first "official" Italian Bitcoin meeting. He's also the official lawyer of the Italian Bitcoin Association and he did a great job with all the "paperwork" needed to start the association in Italy (we got so much bureaucracy here, it's pure madness).
He already got my information, the missing part is about Labcoin: I have to resume everything and with the closure of Btct it's quite a mess (I have to track down the trading emails, the Bitcoin exchange value, etc).
He's also "lurking" on the forum, honestly I can't think anyone better than him for this task.
Like E.Sam wrote... you should be able to download the trading csv. And why bother with exchange rates? You lost bitcoins and bitcoins are the thing you need back.