We have been open for over 20 years and are scanning in all current patients charts as they come in for an appointment. (some patients have a couple charts which we are choosing not to scan old ones in but noting in AC that older records are available)
I recommend purchasing or leasing a high volume scanner if you have a lot of charts like we do. It helps tremendously. Otherwise the Fujitsu Snapscan is great for front desk scanning. Since we started in October 2011 we have added a new server which helped up a lot. We had problems with AC not responding when scanning and seeing patients at the same time with AC before we got on a server.
Good luck!