After doing a lot of looking around in the WordPress Admin, the Codex, and Support, I still seemed to be missing something. In the WordPress Codex entry about importing, it only said:
To start the importer, go to Manage → Import → Blogger and follow the directions.
In WordPress 2.7, there is no such navigation, so I have updated the relevant Codex entry about Blogger. However, the overall page needs some love, so if anyone has the time or inclination, please update it!