Confused on how automessage works on multisite

I have 3 questions regarding automessage
1. I would like to send out messages to new blog signups. It seems there should be a network settings for this - but there is not. I then tested on main blog to see if new blogs to the network would get the automessage - but it did not work.
2. I created the first website level action (the one that did not send out to new signup) then I went to create a second action. How do you populate the Action drop down box with other actions? The only option is "Create new Blog" and there is no text field to add any others.
3. Can you use html in the messages? I have newsletter installed but I would like to create a series of "Getting Started" emails based on when users create their blogs.