Hi, my name is Paul Herigstad. I have my degrees in Computer Science, Electronics and a Doctorate in Chiropractic. At this time I have three items for sale. They are 600 A+ questions and answers Master Boot disk and a Farm Spray Program to calculate the amount of spray to put in the sprayer for farmers. My Network + questions and answers are coming soon. Please click on the appropriate link for more info or please email me 600 A+ questions and answers Master Boot disk Farm Spray Program