I checked the Apple site and found that in order to re-install the OS X software and delete everything, you: 1. Back up your essential files. 2. Insert the Mac OS X Install disc that came with your computer. 3. Double-click "Install Mac OS X and Bundled Software." 4. Follow the onscreen instructions until you get to the destination pane. 5. In the "Select a destination" window, click Options, then click "Erase and Install." But for some strange reason, 'Destination select' always skips on my macbook, it doesn't allow me to do steps 4 and 5. Any way I can fix this? Thanks for your help. I would appreciate it.