Newer 3D systems are all the rage. Go for training at a local community college if at all possible. SolidWorks, SolidEdge, Pro/E, UG-NX to name a few. Also, it is highly recommended to get a copy of the software for at home if at all possible. Be forewarned: Some of these 3D CAD applications take a fairly powerful computer to run adequately.
Ongoing certification in lean manufacturing, finite element analysis, and parametric data management systems like TreamCenter or DBWorks are highly recommended.
Being an expert in MS Office applications can't hurt either. Not just the standards like Word or Excel, but database experience in MS Access and MS Project will get you far at some companies.