How do I link a Shapefile to a SpatialKey data set?

After we have uploaded the Shapefile for you, launch SpatialKey from the data set you want to use the boundaries on.

Change your data viewing type to Thematic Map. By default, you'll see the US boundaries in that box. To add your shapefile, click on the "Add Another Boundary File" link in the lower left. Choose the appropriate data set to join.

On the next page you'll want to select "Use Point Locations" as your joining option, and continue. Once you've paired it up, it should show up in the list of thematic map options.