At the top left side of the computer, gently pry off the CD-ROM drive bay cover. It should pop out very easily.

At the bottom of the case, you'll have to peel off the 2 rubber feet to access & remove the 4 screws total located underneath them.

Use picks or an opening tool to get under at the plastic clips that surround the entire crevice of the case.

Once the clips are loosened, the back should be able to just come off.