with SChoice you can have 4 seperate tuners (box's)
but I have 3 tvs in the basement onto the same box.
1 seperate one in a tv room, 1 seperate in another bedroom, and 2 others onto another tuner. you can get dual tuners also. (watch one channel while you tape another) each tuner has coax output, s video output, and rca output.
if you get a HD receiver. you will have dvi out, component, s vid, and coax.
so I have 7 hooked up to 4 boxs. but could actually hook up a couple more.