From this point on, I would like my order numbers to begin counting up from, say, 1000. How can I configure Kentico to use 1000 for the next order that is placed?
Assuming you don't have order numbers above 999 right now, there are a few (non-elegent) things you could do.
com_order
table with an OrderID of 1000com_order
tableNeither are the best solution but they work and should be done in a dev environment prior to doing it on a live environment first.