I'm guessing you've visited DIYAutotune? they have a tech article on their website that explains exactly how to do the dizzy part of things.
http://www.diyautotune.com/tech_articles/how_to_megasquirt_your_vintage_mopar_engine.htm

And this page has one of the better start-finish lists I've seen. The Megamanual can get overwhelming.
http://www.diyautotune.com/tech_articles/tech_articles.htm