Some Lineage II retail boxes, such as the North American 4th Anniversary Edition and the European Collector's Edition, come with in-game items and other such perks that you must redeem with a code. Below are links to our two Knowledge Base articles that detail how to redeem retail-code related extras.
Applying the Lineage II 4th Anniversary Edition/Collector's Edition In-Game Item Code (http://www.plaync.com/us/support/doc_6803.html)
Applying the the Lineage II 4th Anniversary Edition/Collector's Edition Account Service Discount Code (http://www.plaync.com/us/support/doc_6838.html)
If you are unable to apply your code by following these steps, or you get an error in the process, please contact support via the Suppor Center (http://www.plaync.com/us/support/prod_10.html). Thank you!