Original title: Windows Live Mail windows 7

How do I get my group contacts which is on a flash drive , to copy to a new category . My old system died and I was able to recover my contacts from the back up flash drive , but it won't import the group contacts. I have not been able to move it to any contact folder, so I can't even open it to manually copy each one.  I have created a new category to put these in , but am unable to transfer them. All it wants to do is choose from the contact list of separate address.  I was using Outlook Express before being forced to go to windows live mail.