I understand that you are experiencing problems for playing media from the Cox* service using the Intel(R) Desktop Board DZ68DB and an Intel(R) processor with Intel® HD Graphics 2000.
First I will like to confirm that your motherboard and graphics controller are HDCP capable and you shoudl be able to display peorperly to your TV or monitor.
I will like to mention that HDCP will have several requirements including the operating system needs to be Windows* Vista or 7, the latest Intel(R) drivers and that the cable is HDCP certified.
Please run the following tool to confirm that you have the latest drivers:
If the problem continues, I recommend you to post your inquire in the graphics chipset forum, they may have additional information regarding the compatibility using a PCI tuner card and HDCP media playback.
I have two brand new Dell 660s's each with a Hauppauge DCR-2650 and a Cisco STA152 Tuning Adapter. I have worked on this thing for hours and hours and could not get it to work. I then tried it in my old MediaCenter PC with an ATI card and it worked off the bat. Please add me to the list. I have also opened a support ticket but it is clear now that the issue is with the Intel On-Board Video Card.