Then uninstall Office 2007 and install Office 2003 - if your Eula allows you
to.
Just be aware that you will either need to save any documents created in the
new 2007 format as 97-2003 format before you do, or install the 2007
Compatibility pack afterwards...
Its difficult to understand what you are asking, but if you had a trial
version of Office installed and then installed office2003, you need to
uninstall the trial then repair your Office 2003 installation