TD visa question

Hi All,

Can anyone help me? I am Canadian in USA working on a TN visa. I would
like to bring over my wife (Pakistani Citizen) from Pakistan on TD
visa. Does any of you know the following:

What is the waiting time for TD visa in Pakistan?
What are the key requirements?
What are the chances of getting it approved?
Is there a TD visa form?

Thanks a million!

Steve.