Vista - Addresses in Winmail

Hi All,
I need to send mails to a group of guys quite regularly but the list is not always identical....so I type the names individually in the address box, or select them from the contacts.

I would like to be sure that the order in which I place the names is the order which appears at the top of their message, but Winmail tends to reverse the sending order on my copy, which causes the most junior of the recipients names to appear ahead of the most senior ones in the group.

How can I control this?

Clearly, not a life and death problem!!! I am just trying to avoid giving offence.

Regards

Mike