Here's what was on that website (it looks like I'm out of luck-I actually
have 2002):
Outlook 2002: It runs, but email account passwords are not saved. After you
enter the password during the first email check, Outlook will remember it
until you close down Outlook. This is because Outlook used the protected
storage interfaces to store passwords and these are no longer supported in
Vista. Unless Microsoft decides to create a publicly available hotfix to
address this, you won't be able to save passwords. Outlook 2002 is outside of
mainstream support so this is unlikely to happen as it's not a critical
security hole.
Note that when you enter the password, the Send and Receive that brought up
the password dialog may fail but future send and receives will work. Leave
Outlook open 24/7 to avoid entering it frequently.
Outlook 2000: Internet Mail Only (IMO) mode will fail due to the missing
wab.dll (Windows Address Book). Corporate/Workgroup mode seems to work fine,
except the Startup dialog comes up each time you restart Outlook (click Next
and work your way through the dialog), but with more extensive use,
additional issues may come to light. If you are using Outlook 2000 for email
because you need the calendar, it's probably well worth your time to try the
Mail and Calendar applications included with Vista. Windows Mail is more
secure than Outlook 2000 and includes anti-spam filtering. The Calendar
application supports many of the features found in Outlook 2007's calendar,
including calendar sharing and publishing.