[opensuse] OpenOffice default question

[StephenW]

At work I have routinely been adding OO when setting up new desktops.  That is causing problems because it is coming up as the default office suite. 
How do I reset things so it is not the default?

The real problem is not OO - but the icon that identifies the document.  They are so familiar with identifying their with the blue "W" that they think all of their documents have disappeared. 

Thanks
sw