My browser is unable to "Send page by email". It required me to "Choose
profile". The only option was "Outlook" which had been installed
although I didn't use it, I only use Outlook Express. When accepting
this option an error appeared, reporting that the MAPI spooler could
not be started (MAPI 1.0 [000004C7]). Then I uninstalled Outlook and
now "Send by email is disabled completely (grey).

How do I get Outlook Express back as MAPI client?

(Windows XP SP2, IE6.0 SP2, OE6.0 SP2)

(http://support.microsoft.com/?kbid=178077 doesn't help, OE doesn't
appear as an option.)