Originally Posted by
slangking 
It's the one thing that puts me off doing the whole 12 step thing.
Amends come much later in the process, so that should not even really be a concern at this point. You will be much better equipped to make a decision about what to do regarding this particular issue if you work the other steps first.
Sexual harassment is a very serious transgression no question. Your drinking is obviously intertwined. You cannot undo what you have done, but you can change what you do today. Any apologies you make would likely be far more genuine if you can prove that you've taken action to solve your drinking problem. AKA - actions speak far louder than words. You also have to accept the possibility that your apology may not be accepted for this, or any other, transgression.