Here's a tip for any of you early installers of Office 2008 for Mac: If you're experiencing a crash on launching Word 2008, try throwing out its settings file. Look in your home directory for Microsoft's preferences folder at ~/Library/Preferences/Microsoft. Move the Word Settings (10) file to the Desktop and relaunch Word 2008. That did the trick (with some help from Microsoft tech support) for me under Leopard on an older PowerBook G4. If moving Word Settings (10) out of the way solves your problem, trash the file.