Since 2007 has decided it wants to be the default, de-register 2007 and
re-register 2003

Close Excel first and On the Windows Taskbar

StartRun "C:\yourpathto2007\excel.exe" /unregserver

See the space between exe and /unregserver.

Then register 2003

StartRun "C:\yourpathto2003\excel.exe" /regserver

This process should make Excel 2003 the default for opening files.

You may not have to unregister 2007 first but I err on the side of
caution<g


Gord Dibben MS Excel MVP

On Wed, 31 Mar 2010 05:36:01 -0700, Igor G.
wrote:

I have in my company installed Excel 2003 and Excel 2007.
Excel 2003 is here because some addins not suport newer version.
How to, when I click to .XLS file automaticaly start Excel 2003, NOT 2007?

I try with Control Panel... Folder Options... File Types but allways after
double click, XLA file was started in Excel 2007.
Maybe some change in RegEdit?
Thanks.