I would highly recommend getting your DUI expunged if you haven't yet. It won't show in private background checks for non-public hospitals. It also helps to get it expunged because there was a law that passed where boards cannot reject your license when you have the record expunged or dismissed. When applying for the RN boards, make sure you are honest and disclose. You have to write a letter and you can explain your situation there. You definitely want to have a packet that includes everything they ask for on the website. I went through something similar although it wasnt' DUI. You want to have all your documents as well as evidence of rehab. Your letter of explanation has to be good and so do your recommendations. Good luck to you. I'm pretty sure you'll be fine.