Cannot copy files from linux to windows/C folder

I have Suse 9.0 and Windows XP installed on the same Pentium M laptop machine. From within linux, I can copy files from the windows/C shared folder to other linux folders. I cannot do the opposite. I could do it though in another machine with Suse 9.0 and Windows 98 installed on it. I tried to change the permissions of windows/C folder as root, but it was not possible. In the file etc/fstab I changed the appropriate line to /dev/hda1 /windows/C ntfs rw,users,gid=users,umask=0002,nls=iso8859-1 0 0 but no luck. Any hint? Dimitris