1) You will need Adobe Extension Manager to install the TrickOrScript Plugins. Usually it installs automatically when you install Flash. If you don't have it, please download and install it for free at http://www.adobe.com/exchange/em_download/

2) Download TrickOrScript Plugins installation file.
You can select to install the entire Collection, which includes all the plugins available or to install each plugin individually.

3) Launch Flash, go to the menu Help/Manage Extensions.

4) Click on Install and run the MXP file you've downloaded.

5) Restart Flash and open the plugins by going to the menu Window/Other Panels.

Learn how to use the plugins.