I just moved and dishnet offered me the dual receiver dvr for free. How could I pass up. The problem is this... I want to use a ROM 10 card instead of the one thats in the box (old yeller). If I was to use the yellow one at first, is it possible to revert back to the older Rom 10? Would I be better off using the Rom 10 first? I plan using the cheap subscription in conjunction with a magic card. Hence the need for a ROM 10. Thanks in advance.