Finally, Blackberry has a desktop application version that supports Vista available for the Blackberry Pearl 8100 model. Actually it is a Service Pack for version 4.2 of the desktop application. And there is a matching Service Pack for the Device Manager. These are available at http://na.blackberry.com/eng/support/downloads/index.jsp#tab_tab_desktop. You'll note that Blackberry encourages you to download from the vendor site that sold your Blackberry Pearl to you.