There are different ways to go about sorting your Contact List. The method you choose really depends on the current contact view.
Sorting in Business Card View
Choose View: Arrange By: Current View: Customize Current View… from the Menu bar
Figure 19. Customize View Dialog Box
2. Click Sort…
Figure 20. Sort Dialog Box
3. Set your Sort options
4. Click OK
5. Click OK
Sorting in Phone List View
Phone List View contains a header that goes across the top of your Contact List.
Figure 21. Phone List View Header
Using the Header Row, simply click the column name that you want to sort by. The first time you click a specific column header, your list will be sorted by that column in ascending order. The second you click a specific column header, you list will be sorted by that column in descending order.