I agree with the idea of getting an air band monitor and just listen. Sounds corny (and possibly illegal!

) but if you get a voice activated tape recorder, plug in and record an hours worth - play it in your car when driving. It gets you used to the pace and allows you to 'practice' to some extent.
Just an idea.
Another tip that I was given years ago is to slow your pace of speach and to lower the tone of your voice. With practice it becomes second nature and has a calming effect as well as making you sound more professional. If you sound it, you willl eventually feel it and become it.
[ 14 October 2001: Message edited by: Navig8r ]