If you are in Europe, I heard that Cambridge ESOL, TransLegal and Cambridge University Press are having International Legal English meetings which might answer a lot of the questions you might have about legal English usage. I got some info regarding the following meetings. I think they are open to anyone who is interested.
Wednesday, 27th September, 2006 Milan, 6.00 pm - 8.00 pm British Council Milan, Via Manzoni 38, 20121 Milan
Thursday, 28th September, 2006 Rome, 6.00 pm - 8.00 pm British Council Rome, Via delle Quattro Fontane 20, 00184 Rome
Friday, 29th September, 2006 Amsterdam, British Council Amsterdam, Weteringschans 85a, 1017 RZ Amsterdam The Netherlands
Monday, 9th October, 2006 Cologne, 10.00 am - 12.00 am Kolpinghaus, St. Apernstr. 32, 50667 Cologne
Tuesday, 10th October 2006, Frankfurt, 10.00 - 12.00 Provadis Partner für Bildung, Industriepark Höchst, 65926 Frankfurt am Main