You would need to do:
$ mount -t ntfs /dev/hdb /mnt/hdd2
The '-t' flag indicates to mount what filesystem the partition is. You were telling it ext3fs which is the linux native filesystem.
This assumes that you have support for NTFS compiled in, which by the way you probably don't. In this case you will have to follow
this link and download and install the correct RPM.
Then you will be able to mount as I showed you above.
**BEWARE** Linux NTFS support is considered to most as read ONLY. Writing may corrupt your data.
To make sure you do not write to the partition accidentely you can mount it as so:
$ mount -t ntfs -o ro /dev/hdb /mnt/hdd2
The
option 'ro' indicates to mount it as read-only.
The command 'man mount' will tell you all the other thrilling things you can do with mount, also look at man fstab.
ps. If you are not sure which is the correct locatation for the device/partition you are trying to mount, the command 'fdisk -l' (as root) will list all your drives/partitions.
Have fun, welcome to the brotherhood