GET LAWYER ASAP! An adminstative lawyer with experience in handling professional liscence issues. It is imperative! Like previously stated it does vary from state to state but it isn't a good thing that you "blew" their letters off. Hopefully you have all paperwork of things you did to help you recover....like rehab records, counselors, drug screens. That will be helpful. You may have to do it all again for 3 yrs.on thier terms, but idk. you really need a lawyer, I would think, to have a chance to get it back at all, specially considering the initial circumstances. It is like they revoked your liscence..even if they termed it as suspended. Best of luck...you are not alone!