MS Outlook???

Do you mean, you want to make a backup of current email? If this is what you want, you can use either method below because Outlook 2007 is using a pst file to store your email if you are using Outlook at home.

Method 1

Find out your pst file from your computer, usually, it would call outlook.pst. This file contains everything of your email and contacts.

In Windows 7, you can find the pst file under "C:\Users\<user name>AppData\Local\Microsoft\Outlook" folder

In Windows XP, find it under C: \Documents and Settings\ user \Local Settings\Application Data\Microsoft\Outlook

Method 2

Using the Export function in Outlook, then highlight the folder you want to export, choose the file format you want to save, you can save it as another PST file, etc.