How do I know what keycode is to what key

I would like keys to do special things but I have no Idea what the "keycode" for each key is

Here is a reference for the key codes.

http://help.adobe.com/en_US/AS2LCR/Flas ... 00520.html

you can also select a key by it's name by using the keyboard options under the key codes section.

on key code 65 pressed

is the same as

on key a pressed

Thank You so much. I was looking for something like this but could not find it.