Starting from an existing document
If you installed OpenOffice.org correctly, all Writer documents are associated with the Writer application. This means that you can start OpenOffice.org automatically, simply by double-clicking a Writer document in your favorite file manager (for example, Windows Explorer).
You can spot a OpenOffice.org Writer document by its icon: 
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For Windows users
File associations are used to open certain types of files automatically with OpenOffice.org. When installing OOo, you could choose to associate Microsoft Office file types with OOo. If you chose to do this, then when you double-click on a .doc file, it opens in OpenOffice.org.
If you did not associate the file types, then when you double-click on a Microsoft Word document, it opens in Microsoft Word (if Word is installed on your computer).
You can use another method to open .doc files in OOo and save in the .doc format from OOo. See “Opening an existing document†on page 17 for more information.
