It might help if you were a litle more specific about the nature of the errors you are getting.
Ok, What I am trying to do is use Excel 2002 as a check writer....I've setup up the page demensions to print right on a check. In order to save time with a volume of about 50 checks a week I would like to just type in one cell the amount and have the other cell converted into words. so the specific error is that when I formulate =SpellNumber(A1) it gives me NAME! "error":(:o:(