mapping the `y' to in compose menu

[Eric Smith]

I would like to be able to press just <enter> when I am in the compose
menu and have a mail that is edited and ready to send.  I tried
macro compose \r y
and
macro compose <enter> y

But they both do not rebind the enter key so that it sends the mail.

How would I achieve this?
-- 
Eric Smith
[EMAIL PROTECTED]