i learned that ntfs file system not supported by centos. and i try to tell my system version with uname -r and find my version is 2.6.9-22.EL so i download the kernel-module-ntfs-2.6.9-22.ELsmp-2.1.20-0.rr.9.10.i686.rpm but after rpm -ivh ..................... i do't know how to do? a article told me go to /usr/src/2.......... but i can't even find the dir . thanks for any help.