I'm at my wit's end with this one. This machine came with Vista installed on it. HP wouldn't give me any choices outside of three versions of vista, so I went with the best (Vista Ultimate) like virtually everything else when I had them build this notebook for me. Vista, of course, isn't compatible with most of the third party software and peripheral manufacturers yet, so I planned on putting XP pro in this machine at least until Vista matures a bit and becomes more widely accepted. PROBLEM: Initially XP Setup didn't even see the hard drive. After locating the drivers for the ICH7M chipset and pushing f6 during the beginning of setup, everything seemed hunkey-dorey right up until setup went to examine the HDD (this is a new WD Scorpio 120 GB SATA drive, NOT attempting a dual-boot). At that time I get a message asking me to insert a Intel Matrix Storage Manager floppy into drive A: (I'm using a USB floppy drive during all of this, including the f6 function). Once again I located this driver and wrote it onto a floppy disc. Upon inserting this disc and hitting enter... nothing happens. No response, the FDD doesn't even spin up. Has anyone successfully installed XP on an HP dv9000 machine that originally came with Vista? If so, how did you do this?