Bro here is a sure shot way of getting it:
Go to
Bit Torrent
Download their program and install it
Search for "Flash MX"
I am sure you will find it.
But do not that copies distributed there are pirated copies!
Best option for you would be to download the trial version from the macromedia.com site.
Also note if you dont know how to use flash or have no previous experience of using macromedia director either - you may want to study the macromedia site for tutorials which can take up to a few months to learn