Does anyone have luck to downgrade Vista to XP Pro on Pavilion dv4t-1000? I was able to install XP Pro SP2 after slipstream SATA driver, but I had a hard time finding all device drivers, esp IDT HD Audio Codec. I chatted w/ HP, but most of drivers they suggested didn't work. Officially HP doesn't support XP on this model. Just wondering if anyone succeeded. Thanks in advance.