how can I simulate a window based on pixels?

Is there a way to open a window in pixel base, as 10,10, 800, 1000, or something that can simulate its effect. Without it, i don't know how to get the correct location to put words for all different monitor sizes and resolutions (i am using box keep and box show along with print "words", so the exact location is needed) I can fix it in one resolution but it goes wrong in another, because the size of True Basic output window varies with the size of a monitor.