custom cursor

[Nicolas Cueto]

Hello,

I need a big (and cute!) cursor for a 
preKindergarten stack I made. 

The docs advise custom cursors be three
colors, while a writer in the archives (Ken
Ray) suggests using Rev's editing tools to 
draw my own cursor.

Well, first I tried the draw-your-own advise 
and  made a standalone to test it out. 
However, this command failed

on mouseUp
  set cursor to [image id number]
end mouseUp

So, I tried using one of Rev's built-in 
cursors. However the following also
failed:

on openCard
  set cursor to hand
end open card

Part of the problem it seems, then, is how to
use Rev's cursor property. The other part, I 
guess, is that I don't know how to draw a cursor
that fits the "black + white + transparent" criteria.
(Speaking of which, how do I set one of the image
colors to "transparent"?)

Hope that all makes sense.

Thanks.

Nicolas Cueto