Ok, I tried downloading it and installing it manually from
http://www.microsoft.com/downloads/d...displaylang=en
The install still failed.
The pertinent section of the install log reads...
45.328: DoRegistryUpdates:UpdSpInstallFromInfSection Failed for
ProductInstall.GlobalRegistryChanges.Install error: 0x5
45.328: INF_REGISTRY Failed
45.328: DoInstallation

oRegistryUpdates failed
45.515: WDS ********** EndInstallation called.
45.515: WDS ********** FailedInstallation called.
45.515: Access is denied.
45.515: Windows Search 4.0 installation did not complete.
Select 'OK' to undo the changes that have been made.
45.515: Starting process:
C:\WINDOWS\$NtUninstallKB940157$\spuninst\spuninst .exe /~ -q -z
61.640: Software Update Rollback has completed successfully. The original
error message was: 0x1