whiteboard and video conferencing application

I am in need of a whiteboard application similar to [login to view URL] that also includes video conferencing capabilities for one-on-one, and one-to-many for an online education website. The requirements include: 1. The application should not not incorporate the skype api as idroo does, rather it should have its own protocol/connection for video conferencing and sharing the whiteboard. This can be accomplished with p2p, or .net, or any other technology/language as long as it has excellent video/audio quality and can accomodate 100+ concurrent users on a simple dedicated server. Teachers should be able to hold group classes with up to 10 students at a time. 2. I would prefer to have this application running online, so the user does not have to download/update software, but I am open to suggestions on the best way to accomplish the goal. 3. Application should be integrated into our existing teacher/student admin area with a simple connection process. Teachers can connect to the students at any time that have active lessons in the database. Teachers should have a simple way to test their connection/video/audio. 4. Application should be easily scalable with a server upgrade to accommodate more students in the future. The whiteboard should also include some additional features: 1. teachers/students ability to change the background image with a custom image, or preloaded image. 2. teachers/students ability to upload files and play (.mp3) or view the files (word documents, images, etc) \*\*\*|IMPORTANT\\*\**| If you are interested in bidding for this project, please include a detailed plan of action including languages and technologies used, and a timeframe for completion. I will ignore and mark as spam all bids that do not include this in their bid. \*\*\*|\\*\*\*|\\*\*\*|\\*\*\*|\\***|