The directions for the front bezel removal were written when the 6400/6500s were new, and their plastics still somewhat flexible. The cover doesn't come off easily, just by pressing up on the release tabs (as indicated in the manual). It can be removed, without using a screwdriver to pry it off. To avoid damaging the motherboard's pull tabs, I'd remove it, prior to attempting this procedure. Tilt the case onto its back (resting it on a folded towel or pillow) and straddle it between your legs, with the top cover behind you. Using your index fingers, press in on the two release tabs found on the bottom edge of the front bezel, while simultaneously using your thumbs to press down on the face of the bezel, toward the middle and beneath the speaker perforations. The downward pressure of your thumbs should slightly flex the bezel's sides outward. While applying steady downward pressure in the middle of the bezel, gradually lift up the case with your index fingers, inserted in the openings where the release tabs are located. As you lift upward, the weight of the case should drop it away from the bezel that you're holding onto. I've used this procedure to remove the bezel many times, and it prevents gouging the side edges with a screwdriver blade.