I'm unable to redeem a movie download code.

I have tried the instructions in artice http://support.apple.com/kb/HT1539

They don't work for the latest version of iTunes on Mac.

That link for "Redeem" takes you to a screen to redeem a gift card code, not a download code.

Can't find anyplace in the store to rdeem a download code.

Trying to enter a code for "Rise of the Guardians"