Anybody know how to add a hard drive to your system?

[Alex Waltrip <alexwaltrip home com>]

Can anybody tell me how you add a hard drive to your computer.  I'm thinking maybe the process goes a little like this:
- fdisk:  Create a primary and extended partition on /dev/sdb
- mke2fs:  mke2fs -b 1024 -c -i 1024 /dev/sdb
- mount /dev/sdb /

Is the mount command above correct?  I currently have one 8.5GB hard drive /dev/sda which has two partitions... / and
/swap.  I simply want to mount /dev/sdb so that I now have one ~17GB partition.../.

Thanks
Alex Waltrip