How do I flatten TIFF layers?

[jamiequint]

I have a TIFF image with multiple layers, is it possible to flatten these layers with ImageMagick. From what I have read I have only figured out how to flatten multiple images together into a single image, but not how to do the same thing with layers within an image.

Should converting the image to another type (jpg, gif, etc) automatically do this?

[anthony]

layers are just extra images to IM. just -flatten them Otherwise Im tries to kepp them separate.