Vista - Message transfer to a group

Hi,

I have a new computer with Windows Vista and the e-mail box is not the same
as Outlook Express
(it's called windows mail). When I get a message from a contact, that
belongs to one of my groups, and I want to
transfer the message only to the other contacts of the group, it does not
work, because when I delete the contact after I selected the group, it
delets the contact in the base of my group, and that it is not what I want.
I want only delete the
contact for this mail transfer. My question, how can I transfer the message
to the other
members of a group without deleting the contact from the group ? I tried
different ways, but it still does not work. Please if someone knows how, let
me know.... Thanks in advance.