Need help for ftp a file from unix to windows server

I have a problem with ftp. i want to ftp a file "file.txt" from unix box to windows server.
The destination folder is something like this:
"\\windowsservername\apps\is\"

FTPUSER=ftp1
FTPPASS=****

ftp -v -d -n > ftplog <<!EOF

open windowsservername

user $FTPUSER $FTPASS

cd "\\windowsservername\apps\is\"  /////Here i have problem with windows path

put file.txt  

quit

!EOF

I was successful while ftp'ing file from UNIX to UNIX server...
My problem is, how to mention the windows path there.I dont have access to windows server. We can just view the refernce directory by searching in the network.

i tried

cd "\\windowsservername\apps\is\"
cd "\\apps\is\"
cd "apps\is\"       :wall:///Nothing is working

Please help me....

Thanks,
mani

Q1: Does the Windows servers have the FTP (client) services installed and running? (It is not by default...)

Yes the windows server have the FTP services installed

Have you tried to connect yourself via ftp (that means command line - not using your script...) to see where you end and try to find the correct path?