Contacts in Outlook 2007
This option controls which address book you see when you open the Address Book (via clicking Ctrl+Shift+B) and when you click the To, Cc, or Bcc buttons when composing e-mails.
In some situation you may want to send your vCard in every message. This lets recipients enter the information in their address book quickly and without errors.
With Outlook, you can send a copy of a contact item in vCard format, a standard format for exchanging contact information. This allows the recipient to import the contact data into a contact management program, assuming that the recipient's program supports the vCard standard (as most do).
Sharing distribution lists can be a great timesaver when multiple people need to continuously e-mail the same groups of individuals (for more details see Sharing Distribution Lists). You can easily import a distribution list that was e-mailed to you as an attachment.
In Outlook 2007 you wouldn't find a Contact Group because it's called a Distribution List in this version of Outlook, for more details see How to import a Distribution List sent you as an attachment.
You can easily share you distribution lists by attaching them to e-mail. There are two ways of attaching distribution list: drag-and-drop and the Attach Item command.
It is a pretty time consuming task to send message to multiple recipients at once. Fortunately, if you regularly send e-mails to the group of people, you can create a distribution list and send them an e-mail with just a few clicks.
In addition to providing its default Contacts folder, Outlook allows you to use multiple contacts folders to organize your contacts easily.