How can you link your Nintendo DSi username and Hatena ID together on Flipnote Hatena

You first must register for a hatena.com account before you can link your DSi with Flipnote Hatena. After you have registered and activated your account, start Flipnote Studio on your DSi and enter Flipnote Hatena. You will be asked to login (if not immediately, then when you access the creator's room) and after doing so, your DSi will automatically be linked to your Flipnote Hatena account.