First, you need to export your contacts to a Personal Folders file (.pst) (Personal Folders file (.pst): Data file that stores your messages and other items on your computer. You can assign a .pst file to be the default delivery location for e-mail messages. You can use a .pst to organize and back up items for safekeeping.) by using the Import and Export Wizard in Outlook.
On the File menu, click Import and Export.
Click Export to a file, and then click Next.
In the list, click Personal Folder File (.pst), and then click Next.
Click the Contacts folder. If the folder contains a subfolder that you want to include, select the Include subfolders check box, and then click Next.
Under Save exported file as, click Browse, and then specify a location, such as My Documents, and a name, such as Contacts Backup, for your backup file.
If you back up a .pst file that you have backed up to before, click one of the following:
Replace duplicates with items exported Existing data will be overwritten with the information in the file that is being exported.
Click Finish.
Although you can keep your data files in any folder, the default location that Outlook uses when creating .pst data files is the drive:\Documents and Settings\user\Local Settings\Application Data\Microsoft\Outlook folder. This location is a hidden folder. To use Windows Explorer to navigate to this folder, you must first turn on the display of hidden folders.
How?
On the File menu, click Import and Export.
Click Import from another program or file, and then click Next.
Click Personal Folder File (.pst), and then click Next.
In the File to import box, specify the path and file name of the .pst file you want to import.
Click one of the following:
Replace duplicates with items imported Existing data will be overwritten with the information in the file that is being imported
Follow the remaining instructions in the Import and Export Wizard.
