I recently added theme packs to my channel lineup which includes "Discovery World." The SPP for my area lists only the HD channel number 242. Does this mean that "Discovery World" is available only in HD? If not, can someone please tell me the SD channel number for it? Although we can view channel 242 (HD) through our main TV hooked up to an HD PVR, our bedroom TV is hooked up to the SD-only Shaw Digital Box. I'd like to access the SD channel for "Discovery World," please.