custom preview page

hello,

i have done a wp cms for a big flash showroom application. everythings works fine.

i have implemented a preview buttin in the top admin bar, but the flash have to load the complete site information and the user have to navigate to a page to see the preview. i think this is not comfortable to male the fine tuning.

how can i change the preview button to an individual page with a flash running… and how can i parse the page or post content, with custom fields to url parameters?
are there filter/hooks to do this?

regards