Hi, I have 3-4 Dish TV STBs spare lying around as I kept upgrading when older STBs got slow and when I got 2 new HD STBs. So I was wondering if I can purchase just a VC from DishTV and use the old STBs? Anyone ever done that? Reason I want to do this is that I want to add all my STBs into a multi-room connection and Dish is now not allowing past subscribers to add to multi-room. They permit this only with new connections. Thanks.