Okay I have a major problem.. I just bought an IDE 320 GB hard drive.. installed windows xp, service pack 2 and my system only sees 137 GB. My Bios shows 320GB, I even updated it through the dell website. In the registry the large hard drive is enabled. My mainboard is a Dell Dimension 2550. Do you need to know anything else about my system? How do I get the full 320?