Honestly, I'd suggest running Windows Update, and updating your Office install - yours is rather behind (at least one, if not two Service Packs.) Service Packs 1 and 2 for Office 2007 have done a lot for stability (as well as security.) If Windows Update doesn't show any updates for Office, then upgrade WU to Microsoft Update. See http://www.microsoft.com/windows/downloads/windowsupdate/learn/windowsvista.mspx#ESC for instructions on how to do this.
HTH, Chris[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.]
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