PC: Change Cursor Looks (Showcursor)

1
Hello PTB users,

I'm using Win XP, with MATLAB 6.5 and PTB 2.54

I would like to change the aspect of the cursor going from the arrow
(I think it's the default) to a circle or a cross. I know one can do
that in Mac by using showcursor(2), but there's must a way to do
that in Windows also.

thanks