There have been several recent issues with passwords not being retained with Outlook. If you're running Outlook 2002, the SP1 solves many of these, so start there. If not, here are some other solutions:
For Outlook 2000 or 2002 on Win 98, NT, or 2000:
http://support.microsoft.com/default.aspx?scid=kb;en-us;290684
For Outlook 2000 on Windows 2000:
(CW)
http://support.microsoft.com/default.aspx?scid=kb;en-us;275465
(IMO)
http://support.microsoft.com/default.aspx?scid=kb;en-us;259416
For all Outlook versions on Windows XP (note, this article is written for OE but the solution applies to Outlook as well. Just ignore the parts that refer to OE):
http://support.microsoft.com/default.aspx?scid=kb;en-us;264672
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Jocelyn Fiorello
MVP - Outlook
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