Frequency overrides with ClearQAM - how is it done?

I am doing some tests with Windows 7 Media Center (RTM) and the “Terratec
Cinergy HTC USB XS HD� trible-standard tuner (analog/DVB-T/DVB-C). For this
specific problem I am using only the DVB-C tuner (digital cable).

My problem is that 7MC always seems so scan VHF/UHF QAM cannels with 6 MHz
spacing as used in USA instead of with 7 (VHF) and 8 (UHF) MHz spacing as
used in Europe. This means that it does not find all QAM channels. I have
tried to select Denmark, Germany or UK as location. In 7MC.

With an analog tuner I would solve such a problem simply by making a
frequency override table in registry
(http://msdn.microsoft.com/en-us/libr...09(VS.85).aspx). But when
scanning with the digital cable tuner, it does not read this registry key at
all (I have checked with MS Sysinternals ProcessMonitor). It does read the
key if I scan with the analog tuner.

So my question is - how is frequency overrides made for the ClearQAM tuner?

Note 1 - The tuner scanning does not show any QAM channels at all, unless I
use the workaround http://support.microsoft.com/kb/955486, but after that I
can view even HD QAM channels without any problems.

Note 2 – When scanning with the analog tuner, 7MC finds all analog cable
channels. It seems to use the correct frequency table with 7 MHz spacing on
VHF and 8 MHz spacing on UHF as listed here:
http://msdn.microsoft.com/en-us/libr...82(VS.85).aspx. This seems not
to work with ClearQAM.

Note 3 – When checking which spacing 7MC scans with, I use ProcessMonitor
while scanning and set up a filter: “Path contains TVfrequency�.

Regards,
Peter – Denmark :-)