FIG. 1 is a front view of a set of windows for a computer display screen;

FIG. 2 is a front view of a second embodiment thereof;

FIG. 3 is a front view of a third embodiment thereof;

FIG. 4 is a front view of a fourth embodiment thereof;

FIG. 5 is a front view of a fifth embodiment thereof;

FIG. 6 is a front view of a sixth embodiment thereof;

FIG. 7 is a front view of a seventh emboiment thereof; and,

FIG. 8 is a front view of an eigth embodiment thereof.

The broken line drawing of a window border in all figure views is for illustrative purposes only and forms no part of the claimed design.