software conflict: S/E K800 & Dell Axim X30?

Dear group,

I have a new S/E K800. I can successfully install PC suite (1.20.237)
on my PC (a Sony Vaio running Win XP pro). When I connect the handset
to the PC by the USB cable, I am able to install a number of the
drivers.

However, some fail to install, including (in "phone mode"):

- 039 USB WMC modem ("could not load the installer for modem. Contact
your hardware vendor for assistance")
- USB WMC OBEX interface ("could not load the installer for ports.
Contact your hardware vendor for assistance")
- USB WMC device management ("could not load the installer for ports.
Contact your hardware vendor for assistance")

In "file transfer mode", the S_WHCM driver also fails to install.

As a result, the phone is not recognised by PC Suite.

As I can install PC Suite and the phone on another PC running less
software than my Vaio, I suspect a software conflict. Suspects
include:
- Windows Defender (1.1.1347.0);
- Microsoft ActiveSync (4.2) to connect my Dell Axim 30
- Firefox (2.0)
I am most suspicious of the second.

Have any list members encountered Axim/S/E conflicts in the past? If
so, are they terminal, or is there a way to resolve them without
abandoning one or the other piece of hardware?

Thank you in advance,

Colin