Download and install Windows Mobile Device Center 6.1 if you run Windows Vista on your computer and you want to sync content between your phone and your computer. Windows Mobile Device Center is only compatible with Windows Vista; if you run Windows XP or earlier, you have to download Microsoft ActiveSync.

For the 64-bit version use the following link: http://www.microsoft.com/downloads/details.aspx?FamilyId=4F68EB56-7825-43B2-AC89-2030ED98ED95&displaylang=en