Mark,

FTP_TRANSFER_TYPE_ASCII is a constant. Include defintion of this constant in the beginning of your code:

#DEFINE FTP_TRANSFER_TYPE_ASCII 1

You may require this and other Win32 constants. Use this link to find values for Win32 constants
http://www.news2news.com/vfp/w32constants.php

Also take a look at ApiViewer for Visual FoxPro
http://www.news2news.com/vfp/?article=12