WoW Model Viewer

[Saiyoku]

I have WoW Model Viewer, and I've found a few item IDs that arn't used for any equippable items (That players can equip) such as the display for Akama's kamas, Magtheridon's polearm, and even some Northrend-titled items that don't have any texture atm (Except one, which is partly textured, an outlands shield).

What I'm getting at, is there any way I can get the Display ID (The appearance ID) of these items, such as Akama's kamas? I know I can find it on the website (And I have), but what about me, myself, getting the display IDs? Is this a feature in WoW Model Viewer? If not, where could I find the display ID of most of these items, if not all? =)

Thanks!