I have a client that is going to upgrade his Vista 64 to Win 7 64 bit.  He is now using Windows Mail.  As Win 7 does not come with an e-mail program will the "upgrade" bring over the Windows Mail? or will he have to download an e-mail program (Windows Live Mail?).  If he downloads Windows Live Mail, will it import his existing Windows Mail address book?

I'm using Outlook 2003 so I shouldn't have any issue when I install Win 7 so I can't recreate the problem.