Setting up iChat ...

Please first let me start by saying please do not tell me to search this subject becasue I can not find all the answers.

I have an Macbook and a Desktop, will have three users on each. Want to set iChat up so I can do video chat with my wife and daughter when I am on travel.

Questions

1. How do I set up iChat for AV? Do I just follow the screens?

2. What is best account besides mobile me to use?

3. What is Bonjour, I noticed that on the Mac Book if I log on with my user ex. John Smith that under iChat and accounts I see a John Smith Account for Bonjour. What is this?

4. Whe I set up the desktop and my other user accounts on the macbook will it automatically setup a Bonjour account?

Thanks for your help.
2. What shoud

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