Highlight a known Word document in the Finder, highlight it & choose Get Info from the File menu. In the Get Info box, click the triangle next to "Open With." Click on this drop-down menu & choose Pages. If Pages is not a choice, choose "Other" & navigate to the Pages application. Now click the "Change" button under the text that asks if you want to open all documents like this with Pages. You can then double-click the Word documents & they will open in Pages. Note that the icon for the Word files will have a plain, white icon.