Not a direct answer to the question, but I thought I'd share my setup as food for thought....
I have 6 TV's in my house (3 std def / 3 hi-def) , and my Roku can be watched on all of them
2 of my 3 Hi-Def TVs can get the hi-def signal:
1) One uses the HDMI output - This is my main home theater which is physically next to the Roku box
2) Another Hi Def TV uses the Component output. It's the TV for my treadmill -- close enough to the Roku box to use regular component cables
The rest of my TVs can get the standard-def signal with this setup:
* Composite output from Roku goes into a Modulator which puts the Roku output on Channel 125 -- and outputs this signal on coax
* This is near the coax splitters for my whole house -- so I just send the Roku feed into the whole house feed, and can watch Roku from anywhere in the house on channel 125
As mentioned in a previous post, there is a problem actually controlling the Roku from around the house. Fortunately, I already had a Logitech Harmony 890 remote which works as a RF remote for the Roku. Still, I have to carry the remote to whichever room I want to watch Roku... And the remote costs more than a new Roku...
So for the other two rooms where I watch Roku the most... I bought 2 more Rokus
That really just leaves 2 TV's to share the Harmony 890 remote. Not bad.