I have been trying to have my electronic invoices automatically number
themselves each time the invoice/worksheet is opened. Does anyone have a
formula i could use? I have already gone to all the regular links ie:
http://www.mcgimpsey.com/excel/udfs/sequentialnums.html and
http://www.mvps.org/dmcritchie/excel/getstarted.htm and
http://www.cpearson.com/excel/events.htm .

Trying to teach yourself this online is extremely difficult. Can anyone help?