It is simply against VM's T&C's for you to conenct anything not supplied by them directly to the cable. Also as stated in this thread thier viewing cards are only partnered with a valid box.
If you're using a viewing card via a DVB-C then it has to be a hacked card which we will simply not allow discussion of in this forum.
If you want to give VM a ring and ask them for a card to be matched to your DVB-C card and see what they say
