How do you reset the check engine light on 2002 Chevy Tracker?

with a scan tool on some cars you can disconnect the battery a few minutes and the computer resets

Upon further invesigation I withdraw my answer (below). Apparently 1996 and newer cars have and OBD2 Computer, which means you have to pay a lot more to get the code. Sorry if I threw anybody off prevously.

[The easiest way I have found is to turn the ignition on and off three times (on, off, on, off, on). When you do this, the check engine light will flash the trouble code (ie. blink-blink-blink..pause..blink-blink = 32). If you have a repair manual, the codes should be listed in there. I have done this with every car I've owned it's way cheaper than spending the money on a scan tool that will tell you the same thing.]