FrontPage Server Extensions (FPSE) is one of the oldest publishing and remote-authoring mechanisms offered for Web sites developed using FrontPage and Visual Studio. The current Microsoft-supported versions of FPSE are:
FPSE 2000, available as an IIS 5.1 component with Windows XP
FPSE 2002, available as an IIS 6.0 component with Windows 2003
There's also a version of FPSE 2002 for IIS 7.0 on Windows Vista machines supported by RTR (Ready-to-Run) that's available for download at www.rtr.com.
In cases of both Windows XP and Windows 2003, FPSE can be installed from the Add/Remove Windows Components section in the Add or Remove Programs dialog box. As discussed earlier, you can elect to install FPSE binaries and files as components while installing IIS on the machine.
FPSE is an ISAPI-based authoring and publishing mechanism that provides the backbone for Web-based clients (such as FrontPage, Expression Web, and SharePoint Designer) to open content from remote Web sites for authoring and publishing content from one location to another. Besides remote authoring and publishing, FPSE also enables features such as version control, permissions management, etc., and provides support for a variety of Web components (such as Web search, form-based components, hit counters, etc.) available in FrontPage and inherited by Expression Web and SharePoint Designer.
IIS 6.0 supports the most updated and robust version of FPSE (FPSE ...