Thanks,
I set up the other account and now have one with all contacts and one with my wife's.
The phone numbers are not in this address book. i.e. my wife's address book only contains the email addresses I imported. The phone number for the same person is in another account.
I am totally confused and now scared to delete anything incase I loose one or the other.
So difficult. Why can't it be simple. i.e. you set up a user account each on the imac and then when you import whilst in that account it automatically setsup an address book in that user account and ignores previous address books in existing user accounts. That would be much simpler and if you wanted to share them you could?
Thanks for the help. I at least have the emails in a separate address book.