If you have insurance, I would recommend an extended stay rehab if you think that you are high risk of a relapse not long after release from a detox, however those are not cheap. If you think that you need to get detoxed right away however, go to the ER and just tell them you need detox. Even without insurance they will help you. You should get transferred to a detox facility where they will likely give you Librium and/or Ativan or something similar and vitamins to help you with the detox process. They also need to keep your blood pressure under control. Drinking heavily will cause it to go sky high which and lead to serious problems. After about a week or 2 they will have you stabilized and might give you options on what to do next.