Nah, unfortunately those two screws are just to remove the memory slot component. This can be seen in the picture with the lid off and the PCB showing with a few components sitting on top of it. Basically, the hard drive is on the other side of the green PCB that you can see in the photo, approximately at the level (but slightly lower) than the brown strip in the front shot of the unit. Basically to get at the HDD, you need to remove the CD ROM and to remove the CD-ROM, to me it looks like you just about to remove everything. Gonna take a long time and patience, not to mention a helluva lot of nerve!