So I am looking for distributing cable tv (which I currently pay for) throughout my home without the use of cable boxes at each TV. I would like a central DVR and everything run from that. I have an iMac which is also running Windows 8 via Parallels. I also have a Dell desktop which is currently not used. I would like for everything to run on the iMac, as this is my most used computer, but could pull the Dell out to be a dedicated HTPC.
One option that looks like would work, involves purchasing and HDHomeRun Prime and using Xbox 360's as media extenders. I don't however, have ethernet wired throughout the house, so I do not know if that would be a viable solution. I know I have seen wifi dongles for the Xbox.