Windows 7 doesn't ship with an e-mail client.
You can choose whatever you like.
To simplify things you can install the Windows Live Essentials optional download.
It can be found when you open Windows update.
That will provide you with an integrated e-mail utility.
Thank you both for replying to my question about Windows 7, I have been asking for a friend but I think I will have to let him figure it out himself. I will hang on to the answers for myself when I get a new computer.