Assuming that you mean the new twin-tuner DTT & HDD box from Pace. At present, none of the digital terrestrial channels transmit DD5.1 sound, so the answer to your question is no.
Nearest you'd get is Dolby Prologic, on a programme with a suitably encoded soundtrack.
Just in case you haven't tried it yet, Prologic II sound processing (as found on most newer amps/receivers) does a very good job (in my opinion) of simulating 5.1 surround from analogue 2-channel soundtracks. It's particularly good also when fed with a Dolby Surround soundtrack.