I had a Directv installer at my house yesterday and he said he could not install the new HD-DVR in my house without running new lines. I don't know the model number of the new receiver, but it is coming from Directv and is capable of On Demand. He did say I could get a SWM or a SWM module. If it get the SWM, then I would need to replace my R15 DVR because it is not compatible with the SWM. He did say if I get a SWM Modlule, then I could use the new HD-DVR with two sat. inputs and the old DVR with one input. I will accept the latter, which is much better than running new lines around the house and drilling holes in the walls. Directv will also be installing a new dish for us, type is uncertain, but is capable for HD. Can I useDirectv SWM-8 from 2000networks (DirecTV SWM-8 Multiswitch)? Does it need a power supply and therefore electrical wiring to the dish? If I buy this and have it ready for the installer, will he/she be able to hook it up? I don't know much about hooking up these, so any help will be greatly appreciated.