Using your favorite text editor. (I use notepad, right click the xml and select option edit) then paste the following right below the <Mailpurple>True<Mailpurple>
<ProtectedItems>
<Item>6948</Item> <!--Hearthstone -->
<Item>22829</Item> <!-- Super Healing Potion -->
<Item>37700</Item> <!-- Crystallized Air -->
<Item>33470</Item> <!-- Frostweave Cloth -->
<Item>35623</Item> <!-- Eternal Air -->
<Item>37705</Item> <!-- Crystallized Air -->
<Item>35622</Item> <!-- Eternal Water -->
</ProtectedItems>
Hope this helps. There are guides for modifying or making your own profiles in many places that explain how to get the item numbers etc.