I have a Dell Inspiron 518 desktop computer with a Core 2 Quad 2.4Ghz processor, 4GB Ram, and Intel Integrated Graphics. I am looking to install Snow Leopard on it. I have a retail DVD of Snow Leopard that I can install off of. I have used guides in the past but none have worked. My internal SATA drive will not show up in Disk Utility but USB drives will, I am not looking to install it on a USB I need it to install onto the internal drive. Has anyone successfully done so with a computer identical or similar to the one I am describing, if so please share how I will be able to do this myself. Any help would be greatly appreciated.