In Windows, all your Word documents are save to the My Documents folder by default. However, sometime you may be required to save your documents to a folder on the network server. Rather than navigating to the network server every time you need to save a file, change the default so your Word 2007 files automatically save to the correct folder. Follow these steps:
If you save a new document in Word 2007, it will save in Word 2007 format. If you know you will be sharing your document with users of older versions, such as Word 2002 or Word 2003, you may want to set the default to the older format to ensure that those users will be able to read your newly-created documents.
Follow these steps:
By default, all new files will save in a format that users of earlier Word releases can read.