The microsoft office 2003 installation

Before you can begin using Office 2003, you must load-or install-the software on your computer.
To install Office 2003:
Insert the disk into the CD-ROM drive.
Follow the instructions that appear on your screen.
More detailed information is provided in Setup's Help section.
Keep all installation information and the CD-ROM for your records.
If you are using Office 2003 at work, you probably don't need to install Office 2003 on your own. Your network administrator probably installed Office 2003 on your computer using a network file server or shared folder.


Regards,
Rachel Gomez

Try this. Add a new user/administrative and reinstall on windows. The program will work multiple users. I hope this helps.

First do this
To resolve this behavior, start the Setup program for Office. To do this, follow these steps:

1. Insert the Microsoft Office 2003 CD in your CD drive or DVD drive.
2. If the Setup program does not start automatically, locate the Setup.exe file on the CD, and then double-click the file to start Setup.
3. After the Setup window appears, cancel Setup, and then respond to the prompts to exit Setup.

Note You do not have to complete the Setup program. Setup fixes the error condition when it is first invoked.
If it doesn't help follow these steps.
go to add/remove programs via control panel
the go to office 2003
select "change".
Select repair
You will be asked for the installation CD. Please insert it before start this procedure.
Then do a repair and follow the instructions
Thanks
If this helps you, please rat the answer
Good Luck
:)