If you are making an UMS map, you need to run the AI on the main building only.
If you are making a Melee Map (which I assume you are because you posted in Melee Assistance), you just need to have minerals and vespene geysers near the main building.
How long did you wait for them to start mining gas?
Here is the list you requested. We have tutorials for everything!
http://www.staredit.net/index.php?tutorial=22