How does Windows 98 relate to NT or to Windows 2000?
Windows 98 is the current release of the non-NT Windows operating system that first shipped as Windows 95. It is built from a completely different source code base than NT. Unless Microsoft changes their current plans, Windows 98 is the last product release from that line of development; all future “Windows” operating systems, desktop through datacenter, will be built from the NT source code base. (This of course excludes Windows CE. Also, this is not to say that there won’t be service pack releases that will provide bug fixes and add minor functionality to Windows 98.