Here is code I use for autoit for finding my mouse position to use for botting programs. It will work in any resolution, just compile it and run the exe, press Z for it to make the popup describing the x, y position of your mouse pointer. Enjoy.
Code:HotKeySet("z","jPos") While 1 Sleep(100) WEnd Func jPos() $jPos = MouseGetPos() MsgBox(0, "Mouse x,y:", $jPos[0] & "," & $jPos[1]) EndFunc