>When performing an installation, system DLLs with older versions are not updated to the newer versions contained within the distribution.
>
>For example, a distribution that included the Microsoft C Runtime Library
>Merge Module lays down an MSVCRT.DLL whose version is 6.1.8924.0 on a
>system that does not already contain a copy of MSVCRT.DLL. But a system
>which already contains version 6.00.8797.0 of the DLL (it happened to be a
>Windows-95B system) does NOT have its copy updated during the installation
>process.
>
>Why would this be? How can I get it to work the way I would expect, which
>is to update older DLLs?

Have you checked to see if the Read-Only attribute has been set? i.e. Go to a command prompt and go the the windows\system dir (or where ever) and run "attrib *.dll |more" to see if you get any "R"s to the right of the file name.

HTH,
Larry Long