Right, after seeing that the cat6.5's are out i decidied to download them as i was on the 5.10s i first uninstalled the ctas to do this i found something in the ati folder that sed uninscat.exe or something to that effect and clicked on it, it sed 'Remove all ati software?' i clicked ok it restarted to finish uninstalling the driver. when i logged back on the pc the screen res was really low (which is normal) and i clicked on the 6.55 cats that i had on my desktop it went through the setup then said 'installion failed, try installing standard vga driver first' also the performance is bad, takes ages to do things like scroll down etc i have no idea what i did worng, plz help