newbie question about tkFileDialog.py

[Dinesh Shanbhag (c)]

I am using the 'tkFileDialog.py' module to open a file.
 
To allow the user to select a file I can use tkFileDialog.askopenfilename or
tkFileDialog.asksaveasfilename.

I also want the user to be able to select a Directory on the similar
lines...

Did not find anything like tk_getOpenFile in the Tcl/Tk man pages for
selecting Directories...

Am i missing something obvious ?

thanks in advance for any help,
dinesh.