I have researched the various API calls, common dialog options, etc. but still can't find a decent answer.

Is it possible, using ANY of these methods, to display to the user only folders beneath a certain directory?
That is, assume the default path is C:\mail\2000.
I want to force the user to select only subdirectories (folders) beneath this (which include Jan_Mail, Feb_Mail, etc.).

When the user first sees the "Browse for Directory" box, it should display ONLY the 2000 folder. Then, the user has to select one folder such as Jan_Mail, Feb_Mail, March_Mail, etc. Can this be done, or must you always start from a predefined root (Desktop, C:\Windows, etc.)???

THANKS for any insight and advice.
Steve