FiOS dropped Fox - how do I add back Via HDTV antenna (TiVoHD)

HI - this is sort of a How-to question. I have FiOS cable and cablecard on my HDTiVo. Locally Cox bought the local FOX channel and took it off FiOS until Verizon ups their payment. If I connect an HDTV antenna to the HD TiVo (I'm close enough to get signal), how do I program the TiVo to access channels on the antenna - not obvious from the menus (at least to me). I understand that i may have to manual-program for my fox channels (just a couple), and that's cool, but how do I get the TiVo to record off antenna whilst still recording most everything off cable?



Thanks!!!

/j