Hi Beth, Thanks for the leading.
There are a number of issues in the 1st post of this thread and each have to be dealth with separately and then brought together to allow Steve to move on.
1st there is the issue of baptism and repentance. Steve if you really want to and feel that God has called you to do this, do so, but as Beth has stated this will not take away the other issues in itself. The timing for this must be up to you also. This could be the beginning of a spiritual journey, it could be a step along the way, or it could be the culmination of a process of dramatic spiritual renewal in your life. You may find it difficult to find a pastor who will conduct the baptism nude.
2nd there is the issue of excessive use of alcohol. Yes AA could be usefull, as the support structures are there to help you while you work on your issues. The trouble is AA is full of "dry drunks" people who have not had a drink for years but the reasons for their drinking still is there and AA has replaced the bottle and that is not healthy either. In my experience the main thing I ahve observed with people with problem drinking is that these people HATE themselves. You can not love God if you do not love yourself as you have been made in God's image, mot physically but spiritually. Learn about God and you by looking at Jesus and let him be the reflection of God for you and the reflection of God's purpose for you.
3rdly there is the Abuse. You need to get healing for this. It seems you are like thr little boy who falls over and graises his knees. His mother would like to wash the graise and put a dressing on it but he will not let her as he fears that it will hurt. He limps around protecting the knee as much as he can but it is impossible and he occasionally bumps it and it hurts and goes on hurting because now it has started to fester. The pain of the wound is now far worse due to the festering. You are protecting your wound of the abuse with alcohol but the trouble under the protection it is festering and so you need more and more alcohol.
Here is my prescription!
1. Get yourself a support structure around you of people you trust. I know this is hard and that is why the alcohol is the easy way. Do not have too many, maybe 5 would be a good number. These peope would be good if they are a combiation of AA mebers and Christians. Tell then wahat is going on for you and be open and Honest. Then go out and find a Christian Counsellor or therapist. Work on the hurt of your abuse, and you will hurt a lot in the process. this is where your suport team comes in.
2. The alcohol need will just go away as the hurt deminishes.
3. Your Repentance and Baptism can fit anywhere in this process.
Get down and pray that God gives you the strength to go through this and the Holy Spirit to hold on to you so that you can make that first step and do something with your life and move on with Christ.
The love of Christ go with you Steve.