By default, on my self-hosted version of WordPress, the attachments on my attachment pages are small. Since I didn't know how to go about changing the size of them myself, I used a hack to make the widths of attachments to appear with a 600 pixel width. But the hack does not allow the new image that appears to link to it's full size view, and the default attachment thumb is still right below it. See example here: http://hommetimes.com/2010/02/prada-fall-2010-mens/prada-fall-2010-2/
Is there any way for me to change the default size of the attachment or get the new attachment that appears to link to it's full size view?