Word 2007 prints a single envelope if the destination address is typed but it crashes as soon as I click to look for searching Outlook. However this does not occur if do the same for printing multiple envelopes.

This isn't a problem regarding Windows 7 but a question about Office 2007, ask your question in the Office forums here http://social.technet.microsoft.com/Forums/en-US/category/office2007deployment/ MCSE, MCSA, MCDST [If this post helps to resolve your issue, please click the "Mark as Answer" or "Helpful" button at the top of this message. By marking a post as Answered, or Helpful you help others find the answer faster.]