Check engine light is on. How can I pull the codes?

My check engine light came on tonight (2002 Eleantra). The car runs and drives normally, all fluids are full. Is there any way I can pull the trouble codes. Thanks for any information.
Johnny

Got to a chain autoparts store and have them hook up their obdII tester. It will give you code and probably tell you what it means. heres a link to code definitions.

http://www.autotap.com/codes.asp

Hey, thanks for the idea! I'll stop by Auto Zone tomarrow after work.
Thanks again,
Johnny

once you get the code, go to www.hmaservice.com/webtech

enter your car's info., then click the obd-II tab. it will tell you how to fix the codes.