Porting Call of Duty 4 Weapon models to a workable format

I’ve dug around in the Call of Duty 4 images files and I found the weapons files. They are under the .iwi file type. Is there anyway I can convert this into a workable file type for Blender/Maya/3DSMax? I’m currently trying to make Call of Duty 4 SWEPs.

You must have the cod4 Modtools.

And to extract the models, there’s a really easy way that you can do with Tom’s tool.
http://tom-crowley.co.uk/downloads/?id=10

For the modtools you can find them on the Internet.

.iwi files are just textures… download the cod4 sdk and learn maya