http://www.flashrealtime.com/screen-sharing-in-flash-now-available/
scroll down and see subscriber and publisher
I have also tried the sample screensharing on different domain, I have the exact same issue so it is not the LCCS itself but the connectnow add-in issue.
I get the connect now pop-up on my desktop but I can not use it. Supposedly this is where I can select what I want to share-desktop or application. But this window doesn't open when I click on it. It just sits there in the bottom toolbar.
I am using windows 7, premium, x64. I tried in firefox, chrome and IE. Same issue.
I tried uninstalling and reinstalling connect now but same issue.
I posted this thread in "ConnectNow Add" forum also about a week ago. But I haven't received any reply