I am a registered user of both CoreAVC Pro and ProgDVB Pro but cannot get ProgDVB Pro to use CoreAVC, eventhough I select it as the option for H264, I still ger an error stating that I do not have that codec installed. I tried it with the 4.92.2 and 6.01 and both have the same error. Any ideas?

Try start ProgDVB with /Debug key. What message you have?

PS: CoreAVC good work on my PC with ProgDVB.

Yesterday it did not work, but today it started to work (this is a new computer) and a fresh install.

It does look nice, especially in hardware mode off of a main network feed.

try to use PowerDVD8 filters for H248 and MPEG2. It's stable and can enable video card hardware decoding.

Also, if you use Windows Vista, "Enhanced Video Render" is the best video render!!

Unfortunately, PowerDVD8 filters cannot do 4:2:2 and need to use Elecard Codecs for MPEG2