Zotero can manage your citations while you work in Word or OpenOffice. If you've installed the Standalone, word processor plug-ins were included with that. You'll need to install the plug-in separately for Firefox.
After you do this, you'll be able to place in-text citations and create bibliographies from within your documents.
Macs -- the Zotero toolbar will float near the top of your screen. If you don't see it, go to the View menu, toolbars, then click Zotero to add a checkmark.
PCs -- after installing the plug-in you should see an Add-Ins tab or a Zotero tab, depending upon which version of Word you have.