Sort Order of Dashboard
It looks like sort order comes from the order of the table in the enVision NIC.DB database. My guess is that it would be unadvisable to re-order that database. However, you should be able to recreate the dashboard elements in the order that you would like them to appear.
A better bet might be to make a dashboard in Event Explorer. There are more options and flexibility there. Plus you can reorder them how you wish.