To download flash documents (.swf .flv)
There are paying softwares allowing you to download. But if you don't wanna pay..
1) Get Firefox
2) Get the extension 'VideoDownloader'. It is 1 of the top extensions of mozilla network.
3) Open up the webpage containing the flash.
4) Click on 'VideoDownloader'.
5) A popup window will show you 1 or more links.
6) Locate the flash you want either by name or extensions(.swf or .flv)
7) If .swf you can just save the link or use download managers to download it.

For .flv to work, you need to change the extension from .htm to .flv
.flv (Flash Movie) can be played either by VLC player or you might like to convert it into a avi or mpg file using a converter.
This works with youtube and google video and etc too.
Hope this might help. Of course, there are many many more ways that i do not know.
