The email address is not valid since the domain was repeated.
Remove one of the "@bellsouth.net" occurrences.

Correct the email address first, since it's more likely to be the problem.

If you later need the hotfix, the two main versions you should consider
are listed under the Update information.  If you don't know whether
you have a 32-bit version of Vista or a 64-bit version, download both
of these versions, but try to install the 32-bit version first.  If it
installs,
you don't need the 64-bit version; if it doesn't, also try installing the
64-bit version.  If both refuse to install, then try the Vista SP1 update
next, but expect it to take hours to install:

<http://windowshelp.microsoft.com/Windows/en-US/windowsvistasp1.mspx>

If that also refuses to install, or installs but doesn't help, go back to
the
hotfix description and try the WORKAROUND section.

If you can get to the message, one thing you can do with it is to forward it
to the correct address, preferably with the information about the incorrect
address erased.  For the correct address, use @bellsouth.net only once
after the username, instead of twice.