I have a 2001 dakota with a 4.7 v-8 motor and have added an k&n kit, i am looking into installing a chip to get more horsepower, does anyone know of how to get the chip programmed and where to purchase one or where i can get more info inregards to research, thank you dale.  

Check out these links. these are some of the more popular chips on the markets

http://www.jetchip.com

http://www.kennebell.net

http://www.superchips.com  

also www.hypertech.com