You don't need to know any programming to install it.
This little film will show you
1. How to make a new index page for your TypePad blog (pro membership required--if you don't have a pro membership, you can also put a MapKit in a blog post)
2. How to get your MapKit from Platial
3. How to add Places to the map from your site.
If you don't want a map other people can add to, or if you're just interested in other awesome easy DIY map publshing options, check out this how-to for swf maps, iframe maps, and customized styled maps.