I know this moving horizontal ripple plagues quite a few PCTV Rave/Dscaler/PJ users. For me the "foil sandwich" was useless, but I did find that earthing my digibox helped considerably. However, I still suffered the occassional ripple. But not anymore As I'm watercooled now, & have my PC well OC'ed, I recently was "pushing" some of my BIOS settings. So I actually decided to reduce my CPU speed & enable "spread spectrum" (this reduces EMF by "clipping" the peaks & troughs of the CPU clock cycles). Result? Ripple completely gone I've used Dscaler for about a week now, & not one sight of a ripple (well, I rebooted one night & disabled "spread spectrum" - ripple was back - so this has definately rid me of the problem. So for all you HTPC users with capture cards & Dscaler, check you MB's BIOS setup. AFAIK, this "spread spectrum" feature is a recent addition to MBs, but it's worth checking on any MB. Hope this is useful for some.