It appears all has worked, but then at the last moment, I get an "the
component failed to install".  The error report it generates says:

Error signature:
EventType : visualstudio8setup     P1 : 247     P2 : 8.0.50727.42_rtm_x86_cd
P3 : msi     P4 : inst     P5 : f    
P6 : writekeycodetoregistryaction.6f2b3983_59b8_11     P7 : 0     P8 : 1603
P9 : -     P10 : -  

The install log has:

04/13/06,11:36:39] Setup.exe:
GetGlobalCustomProperty({9AB7F66B-DBC6-4D44-8C09-E16F0EB162E7})
[04/13/06,11:36:39] VS Scenario: Entering CVSScenario::EnableScriptsInHtml
[04/13/06,11:36:39] VS Scenario: Failed to get CoInternetSetFeatureEnabled
function pointer
[04/13/06,11:36:39] Watson UX Data Logging started:

.. and elsewhere:

[04/13/06,11:40:29] Microsoft Visual Studio 2005 Professional Edition - ENU:
***ERRORLOG EVENT*** : ACTION FAILURE:Action ended 11:40:29:
WriteKeycodeToRegistryAction.6F2B3983_59B8_11D3_B360_00A0C9DA500E. Return
value 3.See MSI log for details.

Does any of this make sense to anyone out there?  Any suggestions on how I
might proceed to try to get this to install?  (I've stopped all anti-virus
processes & every non-MS process I can spot, and am doing it as
Administrator.  All prior versions of VS have been removed)

I'd greatly appreciate a suggestion or two.

Rankin