Mark,
Thanks for the reply.
But it does not appear under the Data tab either.
I tried installing the MS Chart control again, and it ran without any errors. But this time I looked at the Installation Log, clicked the Verbose option, and here are last "few" lines from the log:
Created new MsiPerformer for MSI item
[1/29/2011, 11:3:23] Action: Performing Action on MSI at c:\6ca395ca8b76cf694dd9539842\DataVisualization_SetupCore.msi...
[1/29/2011, 11:3:23] (IronSpigot::MsiInstallerBase::SetMsiLoggingParameters) Successfully called MsiEnableLog with log file set to C:\Users\owner\AppData\Local\Temp\Microsoft Chart Controls for Microsoft .NET Framework 3.5_20110129_110302890-MSI_DataVisualization_SetupCore.msi.txt
[1/29/2011, 11:3:23] (IronSpigot::MsiInstaller::Execute) Calling MsiInstallProduct(c:\6ca395ca8b76cf694dd9539842\DataVisualization_SetupCore.msi,
[1/29/2011, 11:3:24] (IronSpigot::MsiExternalUiHandler::UiHandler) Returning IDOK. INSTALLMESSAGE_ACTIONSTART [Action 11:03:24: INSTALL. ]
[1/29/2011, 11:3:24] (IronSpigot::MsiExternalUiHandler::UiHandler) Returning IDOK. INSTALLMESSAGE_ACTIONSTART [Action 11:03:24: AppSearch. Searching for installed applications]
[1/29/2011, 11:3:24] (IronSpigot::MsiExternalUiHandler::UiHandler) Returning IDOK. INSTALLMESSAGE_ACTIONSTART [Action 11:03:24: LaunchConditions. Evaluating launch conditions]
[1/29/2011, 11:3:24] (IronSpigot::MsiExternalUiHandler::UiHandler) Returning IDOK. INSTALLMESSAGE_ACTIONSTART [Action 11:03:24: FindRelatedProducts. Searching for related applications]
[1/29/2011, 11:3:24] (IronSpigot::MsiExternalUiHandler::UiHandler) Returning IDOK. INSTALLMESSAGE_ACTIONSTART [Action 11:03:24: ValidateProductID. ]
[1/29/2011, 11:3:24] (IronSpigot::MsiExternalUiHandler::UiHandler) Returning IDOK. INSTALLMESSAGE_ACTIONSTART [Action 11:03:24: CostInitialize. Computing space requirements]
[1/29/2011, 11:3:24] (IronSpigot::MsiExternalUiHandler::UiHandler) Returning IDOK. INSTALLMESSAGE_ACTIONSTART [Action 11:03:24: FileCost. Computing space requirements]
[1/29/2011, 11:3:24] (IronSpigot::MsiExternalUiHandler::UiHandler) Returning IDOK. INSTALLMESSAGE_ACTIONSTART [Action 11:03:24: CostFinalize. Computing space requirements]
[1/29/2011, 11:3:24] (IronSpigot::MsiExternalUiHandler::UiHandler) Returning IDOK. INSTALLMESSAGE_ACTIONSTART [Action 11:03:24: InstallValidate. Validating install]
[1/29/2011, 11:3:24] (IronSpigot::MsiExternalUiHandler::UiHandler) Returning IDOK. INSTALLMESSAGE_ACTIONSTART [Action 11:03:24: InstallInitialize. ]
[1/29/2011, 11:3:24] (IronSpigot::MsiExternalUiHandler::UiHandler) Returning IDOK. INSTALLMESSAGE_ACTIONSTART [Action 11:03:24: ProcessComponents. Updating component registration]
[1/29/2011, 11:3:24] (IronSpigot::MsiExternalUiHandler::UiHandler) Returning IDOK. INSTALLMESSAGE_ACTIONSTART [Action 11:03:24: MsiUnpublishAssemblies. Unpublishing assembly information]
[1/29/2011, 11:3:24] (IronSpigot::MsiExternalUiHandler::UiHandler) Returning IDOK. INSTALLMESSAGE_ACTIONSTART [Action 11:03:24: UnpublishFeatures. Unpublishing Product Features]
[1/29/2011, 11:3:24] (IronSpigot::MsiExternalUiHandler::UiHandler) Returning IDOK. INSTALLMESSAGE_ACTIONSTART [Action 11:03:24: RemoveRegistryValues. Removing system registry values]
[1/29/2011, 11:3:24] (IronSpigot::MsiExternalUiHandler::UiHandler) Returning IDOK. INSTALLMESSAGE_ACTIONSTART [Action 11:03:24: RemoveFiles. Removing files]
[1/29/2011, 11:3:24] (IronSpigot::MsiExternalUiHandler::UiHandler) Returning IDOK. INSTALLMESSAGE_ACTIONSTART [Action 11:03:24: InstallFiles. Copying new files]
[1/29/2011, 11:3:24] (IronSpigot::MsiExternalUiHandler::UiHandler) Returning IDOK. INSTALLMESSAGE_ACTIONSTART [Action 11:03:24: WriteRegistryValues. Writing system registry values]
[1/29/2011, 11:3:24] (IronSpigot::MsiExternalUiHandler::UiHandler) Returning IDOK. INSTALLMESSAGE_ACTIONSTART [Action 11:03:24: RegisterUser. Registering user]
[1/29/2011, 11:3:24] (IronSpigot::MsiExternalUiHandler::UiHandler) Returning IDOK. INSTALLMESSAGE_ACTIONSTART [Action 11:03:24: RegisterProduct. Registering product]
[1/29/2011, 11:3:24] (IronSpigot::MsiExternalUiHandler::UiHandler) Returning IDOK. INSTALLMESSAGE_ACTIONSTART [Action 11:03:24: GenerateScript. Generating script operations for action:]
[1/29/2011, 11:3:24] (IronSpigot::MsiExternalUiHandler::UiHandler) Returning IDOK. INSTALLMESSAGE_ACTIONSTART [Action 11:03:24: MsiPublishAssemblies. Publishing assembly information]
[1/29/2011, 11:3:24] (IronSpigot::MsiExternalUiHandler::UiHandler) Returning IDOK. INSTALLMESSAGE_ACTIONSTART [Action 11:03:24: PublishFeatures. Publishing Product Features]
[1/29/2011, 11:3:24] (IronSpigot::MsiExternalUiHandler::UiHandler) Returning IDOK. INSTALLMESSAGE_ACTIONSTART [Action 11:03:24: PublishProduct. Publishing product information]
[1/29/2011, 11:3:24] (IronSpigot::MsiExternalUiHandler::UiHandler) Returning IDOK. INSTALLMESSAGE_ACTIONSTART [Action 11:03:24: InstallFinalize. ]
[1/29/2011, 11:3:24] (IronSpigot::MsiExternalUiHandler::UiHandler) Returning IDOK. INSTALLMESSAGE_ACTIONSTART [Action 11:03:24: RegisterProduct. Registering product]
[1/29/2011, 11:3:24] (IronSpigot::MsiExternalUiHandler::UiHandler) Returning IDOK. INSTALLMESSAGE_ACTIONSTART [Action 11:03:24: PublishProduct. Publishing product information]
[1/29/2011, 11:3:24] (IronSpigot::MsiExternalUiHandler::UiHandler) Returning IDOK. INSTALLMESSAGE_ACTIONSTART [Action 11:03:24: RollbackCleanup. Removing backup files]
[1/29/2011, 11:3:24] (IronSpigot::MsiInstallerBase:

erformAction) MSI (c:\6ca395ca8b76cf694dd9539842\DataVisualization_SetupCore.msi) Installation succeeded. Msi Log: Microsoft Chart Controls for Microsoft .NET Framework 3.5_20110129_110302890-MSI_DataVisualization_SetupCore.msi.txt
[1/29/2011, 11:3:24] (IronSpigot::MsiInstallerBase:

erformAction) : no error
[1/29/2011, 11:3:24] Action complete
[1/29/2011, 11:3:24] Exists: evaluating...
[1/29/2011, 11:3:24] (IronSpigot:

ath::Evaluate) Path: C:\Windows exists.
[1/29/2011, 11:3:24] Exists evaluated to true
[1/29/2011, 11:3:24] (IronSpigot::LogUtils::LogFinalResult) Final Result: Installation completed successfully.
[1/29/2011, 11:3:24] Action complete
So, it seems to have "done its thing" successfully.
But I still can't find the Control.
Any suggestions?