Since you've got a WM2003 IPAQ, there is no reason for you to use ActiveSync 4.x. In fact, you lose some capability, such as syncing via WIFI connection, and syncing contacts by category. I would uninstall ActiveSync 4.2 and installing AS 3.8 (Or the version that came with your IPAQ).
To completely remove AS 4.2, you need to uninstall it, reboot, log into safe mode (hit F8 before windows starts loading and select safe mode) once in safe mode, open the my computer and delete the following:
C:\Program Files\Microsoft ActiveSync (the whole folder),
The following file's from C:\WINDOWS\System32:
ceutil.dll
rapi.dll
mobileV.acm
uicom.dll
You also should delete C:\Program Files\Common Files\Microsoft Shared\NoteSync Forms.
Microsoft no longer has AS 3.8 posted to its website, but you can download a copy of it here:
http://www.hpcfactor.com/ftp-root/so...38/MSASYNC.EXE
Julie