At 5:46 pm +0100 6/2/07, J.L. Slangen wrote:

>... I have not discovered in the Mail.app Dictionary any command 
>that moves an attachment from inside Mail to outside Mail. That is 
>to say, I am unable to get the "move", "make" and "save" commands to 
>do anything that comes near to what the aforementioned Save button 
>accomplishes. Any suggestion?

You can get the source of the message

         tell application "Mail"
          set _message to  item 1 in (get selection)
          set _source to source of _message
         end tell

then parse it to extract the base64-encoded data of the attachment, 
decode this using Perl, munpack or something, and write to a file. 
It's not too difficult once you've done it.

JD