As Tata Sky has the largest number of HD channels at present i have decided to buy myself a HD setup boxi am in BangaloreIs HD setup box available in Shops or is only available online?My owner having issues with mounting of antenna in my rented house. but my neighbor in same building already has Tatasky antenna(SD). could it be possible to share the antenna so that i dont need to drill holes much to the annoyance of my owner?