I've got a Dell Inspiron 9300 laptop running Winxp with an ATI Mobility RADEON X300 display card and I've downloaded High Definition demos fro the windows site to try on my HD tv but I can't get the displys to run using the right colours. I can't get the display to run at 256 colours. I've tried looking for a driver but it reports that there is no newer driver for the default monitor. Can anyone help?