jessicaleahy said: its free. I suggest you use the openid. If you have accounts at yahoo, google or flcker, then you have an openid and login at the site.
Its a layered Photoshop file. I would just turn off the layers you don't need, use the slice tool to create the slices of the images you want, and save for web devices.
Comments
http://www.teehanlax.com/blog/2010/08/12/iphone-4-gui-psd-retina-display/