A co-worker of mine sold me a two-year-old HP Pavilion, Umax flatbed scanner and a never-used Epson Stylus printer for the grand total of $75. Everything looks like it's never been out of the box and is in great working order. I wanted to do some upgrading to the computer, so I installed a Seagate 40GB 7,200 rpm hard drive and a lot of RAM. A friend of mine who is more computer savvy than I am tried to install Windows XP Professional as the operating system, but got a dialog box that said the file system of XP wasn't compatible with my BIOS. We called HP tech support and they basically said that HP isn't making a BIOS update available. We theorize this is part of an evil plot to get people to buy new computers if they want to run XP. So, is there anything I can do to get XP to work on my computer? Are there BIOS updates available from third-party vendors? Or do I have to go back to Windows 98 SE, 2000 or ME?