If you just dump files into your userspace and then browse to your space by entering into the addressbar:
homepage.ntlword.com/j.smith
where j.smith is your own ntl username.
you need to use an FTP program to transfer files accross.
This one is easy to use and you see your computer on one side of the window and your user space on the other. Then you just transfer stuff accross.
You will need to put in some upload details such as your password and NTL username.
Host is upload.ntlworld.com. Username is your username, eg. j.smith
Put in your password and igore the acount box.
ftp://ftp.accesscom.com/pub/win/ftp/ws_ftp95.exe