hardware raid 5, online capacity expansion, and parted
 

I have a 3ware 9550, and just added a new drive to the raid 5 array for a total of 3.18TB. Now I need to make linux see and use the new space. I'm pretty sure parted is the method, but I am unsure exactly what to do, and cant afford to mess it up. I'm using FC5, ext3, and no LVM.