how do i fix the 60hz refresh rate on a ati videocard. i want to set it to 75hz so that in cs i get 75hz (vertical sync ON) i already did the registry tweak so that the only refresh rate available is 75hz...yes my monitor supports that refresh rate....if this was a nvidia card i would be set and ready to go...but i went to cs and stil showed a lock 60fps instead of 75fps.....how do i fix this? windows xp is already locked on 75hz for my monitor refresh rate because of the registry tweak i did...but ati won't recongnize it ...still sees it as 60hz thus i only get 60fps in cs