I recently just purchased a macbook pro and I am really unhappy with some of the changes that were made in Leopard. Mainly - the new iCal with no drawer and the preview audio player that doesnt allow u to skip thru the file. Im in music production and these 2 things are vital to me. They really hamper my workflow. Whats the best way to downgrade? Do I have to delete all my data and start fresh?