mount: unknown filesystem type 'ntfs'

wget http://packages.sw.be/rpmforge-release/rpmforge-release-0.5.3-1.el6.rf.x86_64.rpm
rpm -Uhv rpmforge-release-0.5.3-1.el6.rf.x86_64.rpm

yum install fuse fuse-ntfs-3g dkms dkms-fuse

mkdir /mnt/usb

mount -t ntfs-3g /dev/sdc1 /mnt/usb