Need help with how to handle multiple contact folders.

I have set up the top-level Contact folder to handle my companies contacts.
Under it I have set up seperate contact folders by company names for other
contacts.

Now the problem, when I go to send eMail, I only get contacts from the
top-level Contact folder to select from in the "TO" window. I can not see or
select any of the sub-folders for other contacts.

Any ideas for how to get these sub-folders, and contacts within, to be
visiable ?

Thanks,
Tony