So as the title says I'm trying to reinstall everything on a new hard drive on my 2009 MBP. The new hard drive is a 750GB, 7200 RPM, 3.0 Gb/s seagate momentus. I have the July 2009 MacBook pro. For some reason I have two OS X leopard install discs labeled disc versions 1.1 and 1.2 (both are Mac version 10.5.7), as well as my snow leopard upgrade disc. For some reason when I boot the computer I get a gray screen with a folder icon flashing in the center with a question mark on it. What does this icon mean and what am I doing wrong? Many thanks!!!