I've bnever used cute ftp, but I found this tutoral on it.
I use WS FTP light, a free version I got a while back. They have 30 day demo versions available too, if you get that installed I could walk you thru sending a file. It's pretty easy.
Another way is this.
Create a folder off of drive C:, not in My Documents, but straight off of C:/
or somethign real short and easy.
Copy all the files you want to send there.
go to a DOS prompt, type in cd /crap
at the DOS prompt type in ftp web-site-address-to-connect-to
You should get a login prompt, log in with the username and password he gave you.
At the FTP prompt type in prompt
then type in hash
(hash will display ### as it send the files)
then type in mput *
that should start sending all files in that directory.
When it is done, type in bye
to end ftp, then exit at the DOS prompt.