Windows 7: Excel 2003 quits

When I change the formatting on a spreadsheet, ie. portrait to landscape, regular to bold font, etc, and try to save the file, I get an dialog box that says that Excel 2003 has quit, Windows 7 is trying to find out why, and I lose the editing done in that session. It happened 8+ times working on the same file. Any ideas?????

Are you up to date with all the Sps?

sps???

LOL Service Pacs, I think there are 3

The computer is new and I've got the automatic updates turned on so I assume I have all the latest updates installed. The file was originally a .csv download that I saved as an Excel 2003 spreadsheet.

The computer is new, but you installed an old program. Excel 2003 needs the Service packs
http://support.microsoft.com/kb/821549

OK, I assume that I can download those from MS? Anything special I need to do?

The only thing that you have to do is be sure of what SP you have and then download the others.
Just a little extra advice. Before each one, make a system restore point and then test it be sure that everything is up to expectations. If you are satisifed make a new System Restore point and then install the SP
The System Restore can be used to remove the SP if Excel starts to behave in away that you find unsatisfactory.

If this happens on 1 Excel file, but not on other Excel files, it clearly is a problem with this particular file rather than Excel per se.

Did this file work OK at one time and has only recently become problematic?

Have you tried to copy the data into a new Excel file?

Have you redownloaded the file?

Have you tried a format other than CSV?

Have you tried saving with some other Excel file extension, if any are available? I don't recall Excel 2003, but multiple extensions are available in Excel 2007.

Installing the service packs fixed the problem. Thanks to all who responded to my plea for help!!