Thank you Jon, Dave and Chris.

I've installed floAt's Mobile Agent, which seems a beautiful piece of
software: rapid installation, very information user interface.

However, I still am unable to properly connect my handset to the PC.
Attaching the handset by USB cable triggers the "found new hardware"
icon. I am then given a number of error messages indicating an
inability to load the installer for modem and ports for the 039 USB
WMC modem and a few other components.

This is the same problem that I encounter with only PC Suite
installed. (I can connect in 'file transfer' mode with PC Suite.)

In trying to troubleshoot this, SE have mentioned software interaction
possibilities, including with MS ActiveSync. However, these problems
persist even when I have uninstalled ActiveSync. Otherwise, I'm just
using MS Windows Defender, McAfee VirusScan, and Firefox's internal
pop-up blocker.

Again, thank you in advance for any advice.

Best,

Colin