Interesting. It only seems to be a problem with ASSS zones. Care to explain why? I don't know much about it. Or you could have someone generous just upload the .hlp to the zone's website each time it gets updated. Kind of a pain in the !@#$%^&*, but it works.
I was talking to a guy with this exact same problem last night and I couldn't figure it out. The last thing I said to try was to reinstall but I didn't stick around long enough to hear the outcome. Are you using Vista?
Ok, well.. Google tells me that HD channels on analog cable are HD but they don't come in worth a !@#$%^&* because the analog signal is bad. So it's a total waste and you should tell him to get digital cable.