The AOC (Administrative Office of the Courts) of the Supreme Court of Nevada just announced that the first phase of the state court interpreter certification process will be held in Las Vegas and Carson City (outside of Reno) in January and February 2013. Nevada is part of the Consortium for Language Access in the Courts, which means they offer (some) certification reciprocity between member states, so applicants from other states can take the exam here (please check with the AOC of your state to be sure reciprocity exists).
This popular two-day workshop is immediately followed by the (not too challenging) written exam, which in Nevada is English-only. It's the first step toward certification (for several languages, including Spanish, French, Chinese, Vietnamese and Russian) in Nevada. The notorious oral exam is usually held in late summer or early fall. We blogged about that exam here.
For more information, please visit the announcement page of the AOC and please contact them directly for any procedural and administrative questions. If you have any general questions about the exam, feel free to post a comment and we might just have the answer (or point you in the right direction).