How to use google map api key in my Joomla 1.5 article

I am u开发者_StackOverflow中文版sing Joomla 1.5 . I have generated a google map api key . How to use this key in Joomla article.

The first result on google turned up:

http://code.google.com/apis/maps/signup.html

Lucky for you the work has already been done for you. Use the Google Maps plugin and you can generate maps in your content easily.