If you’re redirecting within the same site, you might be able to do this without any special code:
1. Create 1 page per country.
2. For each country page, create a map with 1 shape (just that country).
2. Display all of the country maps together using a mashup.
Now when users click a country shape, it will take them to the corresponding country page (you can set that in the MapPress settings).
If that’s not going to work, then to answer your other question, shapes are pois (like markers). But I should’ve mentioned: the map won’t have any pois until the AJAX call to fetch them is made (mashups are displayed using AJAX).