Windows installer and dlls

Installing postgresql 8.2.0 on Windows XP Pro SP2 using the msi installer dated 2006-12-04, with libeay32.dll and ssleay32.dll (both dated 2005-07-06) (and libiconv-2.dll, libintl-2.dll, and libpq.dll) from a previous installation (of version 8.0.5) already present in c:\windows\system32. These files in system32 did not appear to be updated during the 8.2.0 installation. Instead new files were placed in the postgresql bin directory: new versions of libeay32, ssleay32, and libpq, the same version as the present of libiconv-2 (2003-01-31), and, surprisingly, a libintl-2 with an older date (2003-02-01) than the file already present in system32 (2004-04-27). Is the libintl-2 supposed to be downgraded to a previous version?

I uninstalled postgresql, removed the 5 files mentioned above from system32. When I installed 8.2.0 again, the installer reported that "The installer has detected an incompatible version of OpenSSL installed in your system PATH. PostgreSQL requires OpenSSL 0.9.7 or later. If you remove your OpenSSL files (LIBEAY32.DLL and SSLEAY32.DLL) the installer will install the new version automatically.". However, during the second installation, none of the 5 files mentioned above were reinstalled in system32, only in the postgresql bin directory, as during the first installation. Is the report of the missing libeay32 and ssleay32 a superfluous leftover from the previous versions when these files were installed in system32?