Is Adobe Flash CS3 not available?

http://prodesigntools.com/download-adobe-cs4-and-cs3-free-trials-here.html

Note: Very Important Instructions

You need to have a free Adobe account and be logged into it to use the links below, as Adobe sets a session cookie on your browser that allows you to access the direct download links.  Otherwise, you will receive an “access denied” or “resume your download” message prevent­ing the connection.  So please follow these instructions carefully or the links will not work!

0. Adobe recommends temporarily turning off any surfing restrictions you might have running, like site or cookie blocking, filtering, firewalls or antivirus software.
1. Click «HERE» to visit this page and then select the “Download Now” button at the bottom.
2. If asked, then sign in with your Adobe ID or take a minute to create one for yourself.
3. Now close or cancel any windows that may pop up or any downloads that started.
4. OK! Now you’re logged in at Adobe with the trials cookie set, so you can instantly download any of the software below.  Just make sure you have enough disk space.
5. Download the files either by clicking directly on the DDL links, or by right-clicking and choosing “Save Link As…” on the popup menu – and save all files to the same place.
6. Then follow the product installation instructions here.