change preferred media decoder in windows media center

to change the PreferredMPEG2VideoDecoderCLSID

default: Microsoft DTV-DVD Video Decoder

i use the "ATI MPEG Video Decoder" {37A4D808-E76C-11D2-935C-00A024E52661}

http://mediacenterexpert.blogspot.com/2009/04/announcing-mcdu-media-center-decoder.html

Servus TV HD on windows media center

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Media Center\Service\GLID]

"Ignore NIT"=dword:1

and do a manual transponder scan:: 11303, 22000, horizontal:

i found:

ORF1 HD

ORF2 HD

Servus Tv HD