Just in case anybody is still having trouble with this, I can tell you my story of (eventual) triumph. The XFINITY menu popped up on my TiVo this morning. I tried it out and the menus came up just fine, but content was redirecting my TiVo to the grey cablecard screen. I got on this very forum and found the TiVo/Cablecard pairing hotline: 866-986-8486 The very friendly guy there walked me through the process of discovering that my CableCard did indeed need to be paired. So I called the Comcast Cablecard specific pairing hotline at 877-405-2298. That guy took my cablecard information and paired up my cablecard within 10 minutes. After that my TiVo was able to browse through content, but when I tried to play any content it would play for about two seconds and then stop. Not wanting to call COMCAST again I called the TiVo 866 number again. The very friendly guy checked my configuration and told me that I had a known issue and that I had to talk to COMCAST again, BUT instead of having me call 1-800-COMCAST he transfered me to a special 2nd Level Support Team within COMCAST. He was not allowed to give me the number or I would post it here (which is probably why he wasn't allowed to give me the number). When he transfered me the number rang literally for about 5 minutes. At least 3 minutes. I almost got discouraged but I figured it was ringing someplace and I would just hang on. Finally somebody answered. I had to explain that I *didn't* have a trouble ticket open yet, that I was transfered directly from TiVo, that yes TiVo Premiere boxes supported On Demand in a Trial area -- and he finally took me seriously. He took down my information and told me he'd call me back in 15 minutes. 15 minutes later he verified that yes there was a rollout of this service and he'd get onto fixing the problem, hopefully within an hour. I had to leave for work, but I got a call at work about 4 hours later saying he believed he fixed my account to resolve the issue, could I try it out? When I got home it was fixed. I've been able to access all kinds of On Demand television shows and movies without a problem. Fixing my problem required the two special numbers above and patience, but everybody I talked to was helpful and courteous and effective.