I do not know which of the many refresher programs are best, but, i am just posting so that i, too, can follow this here thread.
In my opinion, to return to hospital nursing, i'd think a refresher course which focuses on learning the latest meds and newest lab tests and procedures, would be essential class topics, as those can change so frequently.
Each and every individual hospital would have to train you for their own computerized documentation program, as that can vary so so much from one hospital to another.
BEST OF LUCK in your endeavor, and hope someone does come by with better info on which refresher course is best.
EDIT: btw, i am fairly new to this forum, but, in this very area of Allnurses, there are multiple other threads on refresher courses, in this same forum of "Retired Inactive nurses"
which might help you discover if there is one that is being recommended (in case no one replies to this)