>in ftp command prompt or in vfp command (especially in ftp command prompt)
From VFP, you can use an approach such as the one I describe in this article:
http://www.levelextreme.com/Magazine/November2001/Page20.aspIt doesn't describe the use of the approach to get the folder size but that will give you a start as to know how to connect to an FTP server and so on.
