Sure can. The STB will be connected to your TV via HDMI or composite (red, white and yellow). Most STB do not have hard disk but have USB port. Just get a Seagate or WD USB drive and you can record in HD format.
oh, most stb has no hdd inside? if that is the case then no point getting it coz if need to connect external usb hdd, i can do that with my tv as well which was what i did previously.
thanks for the quick reply, guess i will make a trip to Courts or BD and check those STBs out.