The Dark Age of Camelot Platinum Edition contains in the packaging three CDs and one CD key.
The software contained on the CDs is the Trials of Atlantis version of Dark Age of Camelot along with the Foundations expansions. The Atlantis Dark Age of Camelot Client is included in this package spread across three CDs.
The key provided can be used to do only one of two things.
It can be used to either: 1. Create a brand new account with Trials of Atlantis access (click "Create New Account" at login screen and enter the CD key at the bottom of the registration page). You will receive 30 days free on your new subscription.
OR
2. Upgrade an existing classic account with Shrouded Isles and Trials of Atlantis access (log in using your username and password after installing the software, and enter the CD-key as prompted). This will add 30 days free to your current subscription period.
Please note that once a key is used it cannot be used again, nor can it be de-activated. It is permanently attached to the account it opens or upgrades.