I have several contact files in my 2010 Office Outlook. How can I set the default file to search for contacts in whe I open a new email and want to add an address?

Are you referring to having several address books and wanting to set one as a default so it searches that book first? If this is what you are trying to set, here are the steps:

1. Open your address book
2. Select Tools / Options
3. Select which address book you want as the default.

I am using Outlook 2010. The file with names, numbers, etc is called "contactc." In Outlook 2010 when I open a contact file there is no longer a tools menu option. In Outlook there is a File/Options/Contacts way to set things, but no place to select the default contact file. In previous versions this option existed and I cannot believe it is not still there somewhere. Where?