Don't quite understand your thread. Are you saying you have Office 2003 and Office 2010 installed? ("My problem now is that Excel 2010 is being activated in preference to 2003 every time I download any data")
If that is the case, if you go to Control Panel/Programmes and Features, highlight the version of office you want to remove, then at the top of the window select either uninstall or change. Selecting change will allow you to remove Excel and Word. This doesn't actually remove them, just makes them inaccessible to Office.