Ok, here's the deal:
I have a persistant disk image with programs I've installed/upgraded and my music etc on.
I want to move the image to an external hard drive.
The trouble is, the external drive is too small for the image (although not the contents of the image).

So, to my question:
Is it possibly to resize a persistant disk image?

And my second question:
Is it possible to copy the contents of one image to another? I've tried creating an image on the external drive, then mounting both images and copying the contents of the old one to the new one, but it just yells at me saying it can't create folders. Is there anything I can do with permissions to make this possible?

Thanks,
Mark