Thanks you guys... i have solved the problem using your info and Knapie's info.
As Knapie says that when linux mounts a partition, it is read only, and when you say remount it again, i have realized that if the partition was mounted by a user, say an administrator, then, the file would not be read-only...
so i used:
umount -t ntfs /dev/hda1 /media/hda1
and this unmounted the harddisk
and mounted using
mount -t ntfs /dev/hda1 /media/hda1
and just as expected, all the files were not read-only!!
Thanks so much guys, i could not have done it without you. You have taught me alot!!!! you guys are totally cool like ->  |