Plug it in. Boot.
(For all the next commands, you need to be root: )
List the disks installed:
Work out which is your new one (Eg /dev/sdb
Write the partition information and quit fdisk
Format it (Eg as ext3)
Make a mountpoint and mount it at your mountpoint:
mount -t ext3 /dev/sdb1 /media/newdisk
Quit being root, and use your new disk.
If you want it to be mounted at boot time, you'll need to make an entry for it in /etc/fstab
Welcome to LQ.