After trying without success to get good PC reception with wireless (wireless network interfered, even tho I replaced wireless B with wireless G), then I replaced the monitor, replaced the video card, discarded the cheap RCA cable X10 sent with the system with high-grade RCA cable (giving up on the wireless altogether) and still had weird moving interference on the Sentinel's reception (most obvious at night when it looked like red and green blotches moving across the screen), I wrapped the cable and VA-whatever with heavy-duty aluminum foil from the end of my good cable to the USB connector to the PC. For the first time since I bought the camera, I have excellent reception.
As an unrelated report, I have what appears to be an optical defect, being a small bright orb in the bottom center of my lens, again, most notable during night vision.