I hate to burst everyone's bubble about the comcast remote red select button theory, but the color of that button has nothing to do with it being the newer remote...it's the patent number on the back....one of our old digital remotes has the red select button and the remote we just rec'd with one of our hd converter boxes has a grey select button, but it has a higher patent number. We got the newer remotes with the 3 hd converter boxes we picked up and only one of the remotes works with any of our tvs. One of the old digital remotes was the only one that would work with our new Sony Bravia HDTV hooked up to the converter box. The one thing everyone is correct about, is comcast not knowing anything...period. Older and newer remotes both made in china but by different manufactures...you can tell by the codes inside where the batteries are. They must all get different uploaded coding info, which would explain why some work and others don't. None worked with our Olevia's either. If you have any techno gurus around, I would try doing what that one person said about getting a cable to hook up the remote to the computer and downloading the current codes. Otherwise get a learning remote. Not too many choices.