1. Open Outlook
2. Select "Import and Export" from the File menu
3. When the wizard opens, select "Export to a file" and click "Next"
4. Select "Comma separated values (Windows)" and click "Next"
5. Select the Contacts folder you would like to export and click "Next"
6. Choose a filename and a place to save the file (for instance, "Contacts.csv" on the Desktop), then click "Next"
7. Confirm what you are exporting: make sure the checkbox next to "Export..." is checked and click "Finish"

To upload your file to Mecca, simply hit "Browse" or "Choose File" below and select the contacts file you've just created.