huwyngr

You are following the sequence of installing the PC Suite before
plugging in the CA42 cable and only plugging that in when told to by
the installation procedure or after it finishes? This is the normal
procedure with USB devices in order to get installed the driver for the
USB to Serial converter in the cable.

I've never succeeded in getting my Nokia 3120c phone connected under XP
or under VISTA using the earlier DKU-5 cable although mine is not a
Nokia made cable .......

BTW Your CA-42 is a Nokia cable and not a third party cable of the same
designation? This can matter since they can have different converter
chips in them needing different drivers although I found the driver for
my chip and that did not help -- I could see the cable coverter in
Device Manager but the PC Suite never saw the phone when it was
connected.

If you work it out please let us know.