It should be listed in the add/removes Programs (In Control Panel). If not,
go to to your system directory, eg c:\winnt (here: c:\ = systemdrive). There
look for a named "$NtUninstallKBxyz$. Now search for a folder called
"$NtUninstallKB823980$ (the folder with containing the KB Article of your
Hotfix). Now open it and open the folder "spuninst" and there open
spuninst.exe. Your Hotfix will be removed. To see those hidden files you
need to have Explorer enabled to show hidden files (can be enabled by
'Tools'->Folder Options->View).
Hope this helps. Regards,
Fabio