First, I would not recommend that you rename the Windows Installer files
and install the redistributable. The Windows Installer 2.0 is an integral
part of the Windows OS, and the version in Service Pack 4 is a later build
than that of the Redistributable.
If you feel that the Windows Installer component is messed up, then I would
recommend a reinstall of the Service Pack 4 to resolve the issue. If you
want to see what is happening with the Windows Installer when it hangs up
at the dialog, then I would recommend to enable the Windows Installer
verbose Logging and Log the information. You can also use Filemon and
Regmon to see what is happening.
Filemon and Regmon can be downloaded from
http://www.sysinternals.com.
223300 How to Enable Windows Installer Logging
http://support.microsoft.com/?id=223300
Cheers,
Tim Macaulay, MCSD, MCP.Net
Microsoft Corp.
This posting is provided "AS IS" with no warranties, and confers no rights