It was inferred that this was intended to discourage consumers from running alternative web server packages on the cheaper edition. Modules, also called extensions, can be added or removed individually so that only modules required for specific functionality have to be installed.IIS 7 includes native modules as part of the full installation.It has been an integral part of the Windows NT family since Windows NT 4.0, though it may be absent from some editions (e.g.Windows XP Home edition), and is not active by default. I can find IIS 6 manager to download but I cannot find IIS 6 itself to download. You can upgrade it by following this steps: If you have the SP3 file and its name is windowsxp-kb936929-sp3-x86-enu.exe, then create a folder in the root of C: and name it sp3, then execute the following command: windowsxp-kb936929-sp3-x86-x:c:\sp3 When finished extracting, there should exist c:\sp3\i386 containing the extracted files.Some versions of Windows Server (including Windows Server 2008 using IIS 7) allow SSL 2.0 and SSL 3.0 by default.The setup program for Arc IMS on Windows prompts for the removal of previously installed versions.IIS supports HTTP, HTTPS, FTP, FTPS, SMTP and NNTP.
These two steps ensure that the system meets the minimum requirements and assist in planning the Arc IMS site configuration.
In themeantime, I couldn't find the information on IIS 5.0 to IIS 6.0 upgrade in Win 2000 machine.
This means that 1 version of IIS ships with a specific version of Windows and that's it.
But what you can do is you can use IIS 7 Express for development purposes.
It behaves just like IIS 7, but can be installed on different Win OS versions, starting from XP and up.