Imagine you want to assemble a group of people from around the world for a brainstorming session. Conferencing programs such as NetMeeting or cu- SeeMe allow virtual workgroups to communicate via the Internet. To videoconference, you'll need a webcam. Participants see each other's faces in smal windows on their monitors and hear each other's voices on the computer speakers. You can use just audio, video and audio simultaneously, or the screen- 10 sharing capability to collaborate on documents without audio or video.