Considering upgrading to a Premiere 4/4XL which doesn't receive OverTheAir broadcasts. Didn't give it a second thought until I read in another thread that non-digital cable broadcasts would also be a problem.... I'm wondering if that could mean that channels 1-99 would not be able to be tuned? The only channel below 100 that I care about is channel 18 - WGN America where I can watch my beloved Cubs during the summer.... For whatever reason, Time Warner has never decided to make an HD version of WGN available. So.....if I upgrade to a Premiere, will I lose WGN??? Anyone else currently using one of these in this area and can confirm if this works or won't work????