I have a Dell Optiplex 320 that I want to install XP Pro. I have a new Western Digital WD5000AAKX caviar blue hard drive. When I boot up I get two beeps and the computer does not recognize the hard drive. I went to Western Digital's site and became confused. Since I only have the one hard drive do I not need a jumper? Or do I need the jumper at 7-8 for XP? Do I need to select something in the BIOS? Any help would be appreciated.

Thanks