Net/smtp & High Importance flag

Hi,

I have a mail alert system running very happily using
net/smtp to fire off a warning to some people when a
server looks busy. In certain scenarios I now need to
send the mail with High Importance flagged; any bright
ideas how this would be done please? (My SMTP
knowledge is fairly limited and although I have
explored all avenues which seem obvious, there is
obviously a trick to doing it but what it is so far
eludes me):

rgds

Steve C.

hehe, nm I found it, the positioning of the
Importance:High is the key to the kingdom in the
message header, needs to be immediately after the
From: line.