I have been trying to follow along with the Win7MC x86 guide and when I go to the LAV setup in Shark007's program, the checkbox for DTS-HD is greyed out and not selectable. I know the system (ASUS E35M1-I) can bitstream DTS-HD as I have installed TMT5 and the AVR (Denon 1610) correctly displays and plays DTS-HD. I've got the latest ATI drivers directly from their website, and Windows is completely updated so I don't think that is the problem. I've already read that the dtshddecoder.dll from the TMT install needs to be put into the LAV folder, but that didn't make any difference to the LAV setup. Any ideas on how to fix this would be greatly appreciated.