Need help ,with Purchase order

Hi all.
This is my first time here ,very impressed.Here is my delema.I have to do Purchase Orders for the company I work for.We are using a generic Excell template.What I need to do is ,I should say what I want to do,is make a about 20 or 30 P.O. printed in advance.I want to have the P.O. numbers to advance one at a time respectively to the amount printed and I want the template to keep the P.O. number current to the amount printed.Right now I have to type in the number and print one copy.than change the number up one and print another and so on.I am new to all of this .Can anyone help.tks. should have kept my old job..

Well thanks for the tips .But that is like Greek to me..lol Gosh is there any other options I can use instead of the Excel template.Someone told me there is something out there that will do this in a much easier manner.I am not a very good learner.So this is tuogh for me..Thanks for the responce.much appreciated.