The suggestion of attending Chapter events is a good one. There are also ACHE educational webinars that might help with staying current as well. Stay up with the literature and Modern Healthcare Magazine, etc.
Networking is vital, keep in touch with people and utilize sources such as LinkedIn.
As far as what employers will be looking for, it's tough to give a simple answer. With the Affordable Care Act coming on line, there will be needs, but it is still a fuzzy picture. Look at ACHE's "FutureScan" report and the Health Reform Resource area at ache.org. Mike Broscio - ACHE Career Resource Center.