The requirments for expungment vary from state-to-state. What you can do before incurring any legal costs for an attorney, is to first google the word expungment and the name of the state in which you were arrested. You should find all of the information that you need to determine your eligilbilty for expungment and the steps for doing so. If, however, you are unsure of your legal staus or you feel that th process is too confusing and/or time consuming for you, contact a criminal law attroney in your area. You can consult with them as to your situation and they can best advise you as to how to proceed.