"conference" is like skype but just video call in iphone 4, ipad 2, pc and mac,
i need all proyect like web page with the database of the users with the unique id, you can add your friends in the system just using the unique id each time you log in and see the list of your contacts, press a button to call it if he is online or offline you will see when log on , i want to test the app in wifi and in 3g my idea if you are in 3g the app only put in the screen a small video window, and send the smal window of video to the receiver and show the message that the user is in 3g because that the video can be slow and small.

webside, dabatase control, users control, payments, chat room, forum, faq, ...
app for ipad2
iphone 4 or any others with front camera.
pc
mac
linux
(optional blackberry, android phones, nokia, for the second part)