Just in case the 64-bit editions of Windows Vista are not the thing for you, the free 120 days version of Windows XP Professional x64 is still available for download. This trial software allows you to evaluate the product for 120 days. Register to order a CD or to download the trial software. The Windows XP Professional x64 Edition trial software download is available at no charge. After you have completed the download registration process, you will receive an e-mail message with a link to the download page. The download page will include the download file and a product key for the trial software. The file will be in ISO format and must be burned to a CD or DVD before you can install the software on your computer. The download file is large—over 550 megabytes (MB)—so the download may take considerable time to complete. We recommend downloading the trial software only if you have broadband, ADSL, or other high-speed Internet connections,” Microsoft revealed on the product information webpage.