I believe on this laptop, there is a cover for the hard drive on the underside of the laptop. Its a panel in the bottom corners. Take out one screw for the panel and then underneath the panel, you have access to the hard drive. After taking out four of the screws that are holding in the hard drive, you will need to slide the hard drive away from where it is connected so that you can remove the hard drive. After that, the cover that is screwed into the hard drive can be removed to get the bare hard drive itself.
Hope this information helps...
Kash
April 2008