Automating some repetitive task

Hello, I'm looking for an Acrobat plug-in or script that will allow me automate _some_ of the repetitive task that I do.

For multi-sheet document, I need to:
1) extract each page as separate file with each open in its own window
2) crop image
3) close window
4) dialog will prompt me to enter filename for it
5) repeat until end.

I'd like to automate step 1, 3 (maybe?), and 5, while I manually select the crop boundary (2) and type in its filename (4).

Thanks,

Devin