Date span question

I have a need to dynamically build a physical file based on a date range. 
In other words, if the date range is from 01/01/03 through 03/31/04, I 
want the file to have one column per month for that date range, and to 
have the column headings show each month ending date within that range. 
I'm having "old-timer's disease" in terms of being able to determine the 
number of months between the from date and the through date. Does anyone 
have a quickie example of a CL or RPG program I could look at?

Thanks.


Paul Nelson
Arbor Solutions, Inc.
708-670-6978  Cell
pnelson@xxxxxxxxxx