Word tries to scan all mapped drives in this dialog box. Chances are the computer has a mapped drive that isn't connected or can't be reached, and Word hangs while trying to connect to that drive. Go to My Computer and unmap any disconnected drives - but make sure the user has a way of getting back to them again. (Shortcut on desktop?) --Hunt, Christopher 21:40, 9 July 2008 (EDT)
MS Office versions don't always line up perfectly. Even if it says "MS Office Pro 2003", doesn't mean that your MS Office Pro 2003 disk will work. In many of these cases, the only fix is just to remove Office and reinstall it from scratch, making any needed modifications.
Macros and viruses
Word documents can contain macros which are small scripts that automatically perform simple actions in MS Word. Unfortunately macros can also have extensive control over your computer, so they can be used to write viruses. Any system that can run macros in a MS Word document, is also vulnerable to macro-based viruses. Use and run macros with care.