As your firm grows or your competitive environment changes you will probably need to replace your accounting software system at some point.  The key objective is launching this critical project at the right time.  If you wait too long, the pressure may be so high that you rush the purchase decision and that can lead to a disastrous outcome.  At the same time if you do nothing, you may miss an opportunity to compete more effectively in your market or run your business more efficiently.  What should you do and when should you start the process?