I just finished up a PhD in Information Systems & Technology, which is related to CS, but much more user-land/application-land oriented. Be careful which type o

I just finished up a PhD in Information Systems & Technology, which is related to CS, but much more user-land/application-land oriented. Be careful which type of program you apply to, if you go CS, it takes a lot of math. Look to see if the degree department is part of a business school. Your real focus is the dissertation; the rest of the courses essentially act as a MA/MS. Make sure your dissertation is marketable (biological stuff is probably the best bet to be hot in 5 years, security and games are hot now, but I'm not sure how much longer). However, I'd really recommend against a PhD unless it (a) directly helps you in in a major way in your existing career, or (b) you want to become an academic. The latter is a tough field to make it in; go to a high-level university or don't bother. You'd better like submitting grants as well, and relocating is pretty much a requirement. I've enjoyed it, but it's incredibly stressful.