I need to know where I stand if I'm to purchase Postcardviewer Pro.

1.  Do I need to download Flash CS4?  I don't know much about Flash technology, but it appears that I would need this if I wanted to compile (i.e. "publish") the .fla file, which would give me the executable viewer.swf file, correct?

2.  Under what circumstances would I need to compile, or recompile (i.e. "publish"), the .fla file to create a new .swf file?  In other words, is it possible to alter the appearance or behavior of my gallery without the need to publish the .fla file?

3.  If I need Flash every time I wanted to make a custom adjustment to the look or behavior of the gallery, what happens when the 30-day trial ends?  Would I be able to download it again, or would I have to spend $700 on purchasing the application?

Whether i purchase this product depends on the answers to these questions.