Take your script from the Script data base topic at the top
of the ASL script forum.They already have an a8s extension.
Download it in your Scripts folder.If it's zip,unzip it to the
Scripts folder.No need for Notepad.
Make sure the Scripts directory is defined in the File->Configuration dialog,
the "Preload Scripts" box is checked and
"Script console" is also checked,so that you can post the console messages
if it still doesn't work.
Start Anim8or.
If it's a shape script,it will appear as a new icone on the left tool bar.
If it's a command script,it will appear in the Script menu.
If it's an export script,it will appear in the Object/Export menu as a new file type.