(1) Install windows live
(2) Download and install a free program as COLGeek suggested.
(3) if You have access to vista, you can import Vista winmail over to Windows 7.
The process is a little involved, but works as I put Vista winmail on My wifes windows 7 system.
One of my replies on this subject:
(1) you will need access to vista Windows mail. In his case your wife still has.
Ok, the link to get the files/programs is no longer valid. So:
First you need to copy the Vista windows mail folder to a thumb drive, But first you must change the permission so that you have full control. Added - Don't forget to Export your old win mail emails and address book to a file and also put on thumb drive. Note: You can replace "thumbdrive" with external HD or DVD disk.
After you have installled window 7 to rename the Windows mail folder to say Old Windows Mail.
Then copy the folder from the thumb drive into windows 7 (Put it in the same folder that had the orginal windows 7 Windows mail folder (Should have been prorgam files).
Click the winmail exe file.