Access to additional contacts in Outlook

During the conversion from Groupwise to Outlook, some of my contacts that were in subfolders have been added to contacts in their respective folders, but I can't access them when I am trying to create an email. I don't want to add them all to my 'Contacts' list since that list is synched with my Blackberry, and I don't want several hundred names to sort through. How can I get access to contacts to send emails if they are not part of the Global email address list?