I currently have Windows 7 Ultimate 32 bit installed on my computer. I would like to install Windows 7 Ultimate 64 bit. I have spoken to Dell and they said I can do this. I put in the 64 bit CD, clicked it and I got an error message. My processor is a Intel Core 2 Quad CPU Q6600 @ 2.40GHz, 2394 Mhz. Can someone tell me what I am doing wrong or how I can go about properly installing Windows 7 64 bit? please see attached image for reference , Thanks.