Well, first you need to be able to parse .doc files (at least, it sounds like you are dealing with .doc files). The simplest approach would be interop with office. Then you need to be able to search for the relevant data. If the resumes have a very consistent layout/format this might be simple. On the other hand, if you need to be able to handle any resume thrown at you, you would need to work out a heuristic to try and identify and extract the information needed. Which part are you having trouble with?
Now, if you don't even know where to begin, it's probably not practical for you to try and tackle this. This calls for years of experience in programming, office interop, text parsing, regex, etc.
