Linux NTFS support

Hello Experts,

I need an urgent help!

We have a 1 TB USB harddisk and it has to be connected to a RHEL 5 machine. Once we connected, it is getting detected by the OS and is shown in the 'fdisk -l' output. But when i try to mount it, it gives the error
"mount: unknown filesystem type 'ntfs'"   I presume that it means the OS doesn't have the support for NTFS filesystem, looking into /proc/filesystem also confirms the same as i didn't find any entry for NTFS.
I tried with various mount options like vfat, pcfs, hsfs etc...but nothing worked :(

I searched for the option to enable the NTFS support in the machine. I'm aware that we recompile the Kernel by enabling the NTFS support but I can't do so since it require downtime for the server.

I'm wondering is there any RPM or package available which I can install to enable the NTFS support?

The details of the server is as follows:

[root@ ~]# cat /etc/redhat-release
Red Hat Enterprise Linux Server release 5.2 (Tikanga)

[root@ ~]# uname -a
Linux inet14h 2.6.18-84.el5PAE #1 SMP Fri Feb 29 16:41:17 EST 2008 i686 i686 i386 GNU/Linux


Please let me know a solution asap.

Thanks in advance