The question of how to ideate and collaborate remotely comes up often these days. Chris Noessel from Cooper & scifiinterfaces.com wrote these articles on how they collaborate and ideate digitally within OneNote. Even though the article is targeted towards Interaction Designers, it could apply for any type of meeting where a whiteboard is needed.
OneNote for Interaction Designers, Part 1
OneNote for Interaction Designers, Part 2: Nuts and Bolts
OneNote for Interaction Designers, Part 3: Research and Presentation