What's so special about ThemeFrame! What does it do?

Dumb question: What's so special about ThemeFrame!

I've seen the video - it looks awesome
But... I think a few more lines of text explaining exactly what it does would have helped!

Can I use it to develop ANY layout for Wordpress?
How well do I need to know CSS?

How about adding extra menus and other interactive objects (non Flash) - how well does it cope?

What does it NOT do? What limitations does it have?

Can I use it to apply a graphic shadow outline to DIV's?

Can I use it to change underlying backgrounds?

Ready to buy... would appreciate answers to the above

Where is it hosted?
Do I get the code and host on my server?
Or do I use from somewhere else as a web based service?

Thanks!


OM