I am planning to upgrade to vista ultimate to take advantage of the windows media center. Is there any way to get the media center without the upgrade and will my external hard drive need to be reformatted causing me to lose everything once i upgrade???? Any help will be much appreciated. My computer is a Toshiba Tecra A6 with an Intel Duo Processor 1.83 GHz 1022 Mb RAM and a 32 bit operating system. Thanks for your help