The above method uses an iframe. How does it not work? An iframe doesn't necessarily mean you'll get nasty borders and scrollbars. It can look like it's directly integrated into the page.
If you don't use an iframe, there is a massive amount of logic you'll have to duplicate to have the app launch seamlessly. The iframe does this for you.
The method detailed below will work, but it will send them to your ScreenConnect site and likely they'll have to hit the "Join" button a second time because some browsers (really just IE) won't let us launch our client without user initiation:
http://forum.screenconne...e-Box-into-web-site.aspx