Mac -> Win problems

[Charles Hartman]

I've got an app (about 500kb) mostly finished in OSX, in DreamCard. I  
just got access to the Win XP machine I use to test x-platform apps.  
I have three problems, and I'd be grateful for suggestions. The first  
two are (I'm guessing) known and not too hard, though I don't see  
anything in the docs to cover them. The third one I suspect may be  
hard enough to make me wish I hadn't started on this project.

PROBLEM 1: On WinXP, the cursor disappears whenever I mouse onto a  
stack.

PROBLEM 2: in "answer" commands, the choices I specify are there, but  
they're in reversed order.

PROBLEM 3: One interactive tutorial works like this: In Courier (for  
the sake of monospaced alignment between lines) there's a line of  
text, with a line of marks over it. The marks, in various  
combinations at various times, are covered up by opaque, borderless  
fields, which are hidden (revealing the mark below) in response to  
mouse-clicks. But on WinXP, though the font is the same (Courier  
New), the size is different! So the mark-hiding fields don't cover  
their marks.

Charles Hartman