The process took 3 weeks. I interviewed at ADP (Dallas, TX) in Sep 2009
Interview
I contacted them through a college recruiter, the phone interview was painless, they are basically looking for someone that is interested in sales. I made it to the 2nd 1:1 interview and that too was fairly easy. He basically told me about the job and it was less formal than I anticipated. He warned me about the job and told me that you have to work very hard and it is not an easy job by any means. He told me that he would get back to me in about a week for the next interview that would be more formal and with more people. Hope this helps good luck!