How to reset 2005 Ford Explorer check engine light?

How do you reset the "check engine soon" light on a 2005 Ford Explorer? I usually disconnect the battery.. for couple of minutes and reconnect the same. But I advise you to have this checked with the ford dealers or anyone with a computer console as the above is just a temporary solution. Its better to spend a couple of $ resolving a problem then $$$$ repenting over it !!!!