RIM announced BlackBerry Enterprise Server Express a couple of weeks ago and not it's available for download. BlackBerry Enterprise Server Express is a free version of BlackBerry Enterprise Server for small and medium sized businesses.

"BlackBerry® Enterprise Server Express enables businesses of any size to quickly and easily get started with the BlackBerry solution. It provides advanced BlackBerry smartphone features with no additional software or user license fees, and works with any Internet-enabled BlackBerry data plan or a BlackBerry enterprise data plan."

To get BES Express go to the link below. You'll be asked to give your information and will receive a download link via email.