Are you trying to cd to the service to be invoked via FTP?
You would not include the drive name, nor the path leading to the IS installation directory. To invoke the service you listed above:
cd \ns\Examples1\xml\usingFtp
You may find the Flat File Schema Developer’s Guide to be helpful. Champter 4 describes invoking services via FTP.
#webMethods#Integration-Server-and-ESB#webmethods-Protocol-and-Transport