Running Outlook 2003 SP3

I'm regularly asked to send out an email to around 40 people and have
previously done so by simply clicking 'reply all' on the most recent one
sent. However, I'd like to create a distribution list in Outlook 2003 which
will allow a degree more control over the process and enable me easily to
add and delete entries as appropriate.

Is there any way I can create this list without having to retype all the
names and email addresses, one by one, into the 'Add New' box? For example,
if I look at one of the emails I've sent, I can right-click on an address
and select the option 'Add to Outlook Contacts'; but when I select more than
one, that option isn't available. Click-and-drag doesn't work, and neither,
it appears, does copy and paste.

Many thanks.