Advertisements I have had this problem with TiVo Desktop 2.4 and 2.5. The software installs correctly, but when I choose to "Upgrade to TiVo Desktop Plus" from the menu, it just tells me it's checking my system then says the upgrade is complete and I can now set up recordings for portables. Version 2.3 used to give me a box to enter the key in, but I re-installed Windows XP recently, and didn't have the 2.3 download saved so 2.4 was the first version installed. I have the key, and I'd like to enter it because I want to be able to watch videos that live on my PC from my TiVo, but I can't. Does anyone have any suggestions, or know where the key lives in the registry so I can enter it the back way?