I would suggest you try using the ".../cleanviews" switch first.

/CleanViews Restores default views. All custom views you created are
lost.

I will also include some information that may help you to understand
a little more about some of the files used by Outlook.

A simple reinstall does not clean these files up. Outlook needs to be
closed to delete any of these. These files will be recreated when you
log back on to Outlook.

If the CleanViews switch doesn't work:

Search your hard drive for Views.dat and delete it. (This file holds
your customized system folder views settings)

 .. Outcmd.dat and delete it. (This file holds your customized toolbar
settings)
 ...Views.dat and delete it. (This file holds your customized system folder
views settings)
 ...extend.dat and delete it. (this file holds your Installed add-ins
information)
 ...Outlook.xml  (This file includes Shortcuts, Calendar, and Contact
links.)
... The navigation pane settings are profile-specific and are stored in
    an .xml file with the profile name, in the Application Data\Outlook
folder.

To clear all navigation pane customizations, start Outlook once with the
/resetnavpane switch.

Some of the folders might be hidden folders. To view them, do one of the
following:

Windows XP

 1.. Click Start, and then click My Computer.
 2.. On the Tools menu, click Folder Options, click the View tab, and then
click the Show hidden files and folder option.
Windows 2000

 1.. Double-click My Computer on your desktop.
 2.. On the Tools menu, click Folder Options, click the View tab, and then
click the Show hidden files and folder option.

Nikki Peterson