Microsoft ActiveSync 4.5

Download and install Microsoft ActiveSync 4.5 if you use Windows XP or an earlier version of the Windows operating system on your computer and you want to sync Microsoft Office Outlook data or other files, including pictures and music, between your phone and your computer.
ActiveSync is only compatible with Windows XP (US) or earlier. If you run Windows Vista (US) or Windows 7, download Windows Mobile Device Center.

ActiveSync system requirements
You can use ActiveSync 4.5 with any of the following versions of the Windows operating system:
Microsoft Windows 2000 Service Pack 4 (SP4)
Windows Server 2003 SP1
Windows Server 2003 SP1 for Itanium-based Systems
Windows Server 2003 Standard x64 Edition
Windows XP Media Center Edition
Windows XP Professional x64 Edition
Windows XP SP1
Windows XP SP2
Windows XP SP3
Windows XP Tablet PC Edition

ActiveSync 4.5 works only with the following versions of the Windows Mobile operating system:
Windows Mobile 6.5
Windows Mobile 6.1
Windows Mobile 6.0
Windows Mobile 5.0
Windows Mobile 5.0 with Messaging and Security Feature Pack
Windows Mobile 2003 Second Edition
Windows Mobile 2003

http://download.microsoft.com/download/5/4/6/5467c040-a935-4987-aa30-5dc...