Hi JR,
It depends mostly on the macros and user forms. Excel's object model had some minor changes over the versions.
But I guess your chances are far above 90%, if you don't use versions older than Excel97.
Look here for a list of some changes:
http://www.j-walk.com/ss/excel/index.htm
--
Kind regards,
Niek Otten
Microsoft MVP - Excel
<(E-Mail Removed)> wrote in message news:04cf7903-a5e2-402c-aea4-(E-Mail Removed)...
|I have created a file in Excel 2003, and saved as "Excel 97-Excel2003
| &5.0/95 Workbook" and I am running XP.
|
| The file utilizes several macros, VLOOKUP and COUNTIF commands.
|
| My question is if this file is distributed throughout the general
| public, what do you believe could be some unforeseen compatibility
| issues I am not aware of as it will obviously be opened on several
| versions of Operating Systems and versions of Excel?
|
| Do I have a 50% chance of success that it will be compatible? What
| would be your guess at the percentage of success?
|
| What are my options to make it more successful throughout more OS
| systems and Excel versions?
|
| Will some type of compatibility pack be the answer?
|
| Thanks for the anticipated help.
| JR