Thanks I will do more research ... but here is one thing I dont get.
The guy from IPS simply replaced the HD box from an older one to the one he brought and the TV wasnt able to recognize the box.
and the fact that the guy came to fix had to bypass the existing set up.... I just wish I was there to ask that guy what as the problem rather than hearing the set up was "bad" and he had to bypass it.
and I am willing to buy the equipment to enable HDTV distribution from a single box but I dont know if that was there in the first place to enable that...
Well I guess there is something that allows sharing of SD because we can watch SD tvs on other TVs.
Thanks a lot though Jeff!