Online Marketing Course

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Best way for 3 students in an online MBA marketing course to collaborate in real time?

I'm in a group with two other MBA marketing students. It's an online course, and face-to-face interaction is impractical. I'm looking for the best way for us to hold conferences.

MUST list:
Free
PC- & Mac-compatible
Real-time audio that allows interruptions

WOULD BE NICE list:
Real-time video
Whiteboard
File transfer
Ability to share desktop

Recommendations?

As I know, this site has top listing of such college courses online - edu.2kool4u.net

Training Video #1: How To Make Money Online


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