Hi
I don't think you actually need to change anything, it should be working fine as it is.
I also use keyclone even if not boxing to load up WoW as I like to have the 100% full screen but be in basically
Windowed mode. My screen res in keyclone is 1920x1080 and when it loads that's exactly what it is BUT if I
Look in the WoW video settings it shows 720x576 i.e the pic






So do you know if is definitely not the correct res or are you just looking at the numbers?