There seems to be some confusion about what a meeting room is and what a virtual classroom is. Virtual classrooms are part of what Adobe calls the "Adobe Acrobat Connect Training Module." In the Training Module, you can create a complete online course, including meeting rooms for synchronous meetings -- these are what Adobe is calling Virtual Classrooms. They function essentially the same as a regular "meeting room."
For more information, see the Adobe recording at
http://www.adobe.com/products/acrobatconnectpro/elearning/virtualclassro...
BTW, Penn State doesn't make the Training Module available -- it does require separate access permissions.