All of the needed information can be found:
http://www.guildwars.com/products/extras/storage/
http://www.guildwars.com/products/extras/storage/free_storage_pane.php
http://wiki.guildwars.com/wiki/Xunlai_Storage_Pane
Good luck!
PS – Even though this is a 4 Year Anniversary “gift” you don’t not need to have a 4 year old account.
