It is possible to backup the Account settings of MS Outlook (verified on 2003) so you don't have to reacreate all of them when reinstalling windows as follows:
1. Open the registry editor
2. Located the following path:
HKEY_USERS\<some unique ID>\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles
HKEY_CURRENT_USER\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles
3. Backup the entire Profiles key to a file.
To restore the backup on another computer, simply import the backup into the new computer's registry. You may need to delete the Outlook key off the new computer first.
Notice: working with the registry might be irreversible and cause system instability. We recommended to backup the registry prior to making any change within it.