The upcoming Microsoft ActiveSync 4.0 is available on one of the software download site

From the description,

Microsoft ActiveSync is the latest and significantly improved synchronization software for Microsoft Windows Powered Pocket PCs. It is easy to install and use and offers the best levels of reliability yet. It also brings you up to date with compatibility to Microsoft Office XP and Windows XP. It will automatically detect and configure the port that is used to connect a device to a PC, whether a serial port or an infrared port is chosen. In addition to serial and infrared connections, it supports Ethernet and dial-up connections and supports both wired and wireless implementations of those standards.

Note that the network sync is removed for this installation.

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