hello Laura:
you dont need drivers for hard drives. You do however need to format the drive before it will be visible in My computer as ready for use.
you basically have two options:
A) you can format the drive from within windows dismanagement. There is a disk managment guide in my sinature links.
B) You can use the hard drive manufacturers set-up utility to partition and format your drive.
I prefer choice B; but both will work