? (newbie here) I have an excel worksheet with 65000 records(rows). Each corresponds to a city resident. I need to number them sequentially, 1 thru 65000 basically, but each number should be preceded with a code (like ABC-00001, ABC-0002... and so on). When I add this new column to my worksheet and then re-import, I get an error message. Can someone help me figure this out?