PHD in business related subject is a very intesting line of work indeed. Unless you are going to persue research/education it might be tough for you to capitalize on your background. However there seems to be a demand for busines people who can apply social science to it. There seem If you already have biz background, I would persue something else for phd. One thing positive about bush administration is that they want non profits to come up with financially sustainable model. so i am sure in the future in teh world of non profit we will begin to see leaders that are socially conscious biznessmen or biznesswomen. good luck!