If you already have a Windows Live ID, just sign in at the left to become a Bungie.net member.

Hint: If you have a gamertag and have played on the Xbox 360 console then you already have a Windows Live ID. You'll want to use that ID because it is linked to your gamertag, which gives you all the cool stuff from the Halo 3 Service Record. Tell me where to find it.

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