I'm currently using WS_FTP_Pro to transfer file to and from a SFTP site and would really like to move those tasks to VisualCron, unfortunately it's not possible. I tried to use custom commands with SFTP and got this error 500 until I discovered (reading the manual) that it was not supported. I need to do the following:

CWD '<userid>'
mget *
mdelete *

or
CWD '<userid>'
put xxx.xxxxx